1,4,3,16,5,36,7,64?

1,4,3,16,5,36,7,64?

{[(-1)^n+1]n^2+[(-1)^(n+1)+1]n}/2

Finding the general formula of - 1,1 / 3, - 9 / 35,17 / 63, - 33 / 99

- 1,1 / 3, - 9 / 35,17 / 63, - 33 / 99 can be deformed into
-3/3,5/15,-9/35,17/63,-33/99
The denominators are 3, 15, 35, 63 and 99 respectively
The general formula is (2n) ^ 2 - 1
The molecular weight is - 3,5, - 9,17, - 33, respectively
The general term formula is 2 ^ n + 1, and it is single double alternation, plus (- 1) ^ n
Merge to (- 1) ^ n * (2 ^ n + 1) / [(2n) ^ 2-1]

The formula of - 1,1 / 3, - 9 / 35,17 / 63, - 33 / 99

It's not missing. It's going to have to be deformed
-3/3,5/15,-9/35,17/63,-33/99
In this way, it can be observed that the general term of the molecule is the nth power of 2 plus 1
The denominator is (2n) ^ 2-1
Just add an n-th power of (- 1) to the sign

A Spanish translation?
Email from Peruvians
It seems that Peruvians speak Spanish, so please ask the experts
REQUERIMOS COMPRAR TELA HIPORA
NUESTROS TELEFONOS
051-1-4700235
051-1-4727248
NETXEL: 051*815*4250
ELIAS BARRIGA

We need to buy hipora fabric
Our phone
051-1-4700235
051-1-4727248
No. 051 * 815 * 4250
Elias Barriga (name of sender)

English translation
gracias por contestar te envio la etiqueta que es la de color azul para las botellas de litro y medio litro ,pero igual deseamos esa mismo diseño de etiqueta para los galones de 19 litros pero en una medida de 25 cm x 6.5 cm cual seria el precio la cantidad minima de ambas medidas
ahora me gustaria que nos madaras unas muestras de etiquetas que tienes en los diferentes materiales para darnos una idea o que materiales usas para las etiquetas .

Thank you for your reply. The blue label I sent you is for 1.5-liter bottles. I also hope that these same labels will be used for 19 liter bottles, but the size will be changed to 25cm * 6.5cm. What is the price and minimum order quantity of these two sizes (1.5-liter bottle and 19 liter bottle)?
Now I think you can send me some labels of different materials so that we can decide which one is suitable

Help translate a Spanish paragraph
Siely Arco
Diamond resume aceite de nutricion

Siely Arco
Essential oil of diamond essence
I guess its so-called diamond is just a series of names, rather than the essence of diamonds.

English translation
: Si estabas en la Londa Espa & ntilde; Ola estado alli
：fue la razon por la k te viniste aki no?
：xD
：estabas al dia
：te enterabas de las noticias de españa
The above is a Spanish friend MSN sent. My Spanish is not good, sometimes do not understand, and then turn the dictionary, this time

If you really live in La Ronda, Spain, that's why you're there, isn't it? It's just an expression

English translation
BUEN DIA JESSICA LEE,SI NECESITO UNA FACTURA PROFORMA CON TODO DETALLADO SOBRE LA MAQUINA FORMADORA XF12-23 DOUBLE-DECK ROLL FORMING MACHINE PARA ROLLOS DE 1220MM PARA ESPESOR DE 0,40 A O,50MM.
Another sentence: eata es La maquina El precio es de u $s16900 environment La fac format

Jessica, I need the proforma invoice of xf1223 double roll forming machine, product specification: coil 1220 mm, thickness from 0.40 to 50 mm

English translation
ASUNTOS CONSULARES
>> QUÉ PUEDE HACER EL CONSULADO POR USTED?
>> VISADOS
>> VISADO DE ESTUDIOS,MÁS DE 90 DIAS
--------------------------------------------------------------------------------
1.Solicitud de visado:
Las solicitudes de visado para estudios deberán ser presentadas y recogidas personalmente por el interesado.
El horario de la Sección Consular de el Consulado de Españaña en Pekín es:
Lunes,martes,jueves y viernes.
08:45 12:30 Entrega de solicitudes de visados
15:30 16:30 Recogida de visados
Dirección:
San Li Tun Dong Si Jie ,Nº 9 Distrito de Chaoyang - 100600 Beijing
2.Documentos que han de aportarse:
1) Impreso de solicitud de visado debidamente cumplimentado,con 4 fotos recientes.
2) Pasaporte ordinario con vigencia superior a 120 días (original y copia de la hoja de datos).

Subject matter
What can the consulate do for you?
visa
Study visa for more than 90 days
------------------------------------
1. Visa application
The application for study visa should be submitted and received by the applicant himself
Schedule of the Spanish Consulate in Beijing:
Monday, Tuesday, Thursday, Friday
8; 45-12:30 a.m., submit the application for study visa
15:30-16:30 PM to receive study visa
Address:
East 4th Street, Sanlitun, Chaoyang District, 100600 Beijing
2. Documents required for visa application
1) Completed application form, 4 recent photos
2) Original passport valid for more than 120 days (original and copy of documents)

English translation
1）English and French are the official languages of Canada.
2）My favorite colors are green and blue
3)The official bird of the United States is the eagle.
There is also one translated into Chinese
Escriba la forma plural de los sustantivos y sus artículos definidos.

1 el inglés y el español son las idiomas oficiales de Canada.2 los coloers que prefiero mucho son verde y azul.3 la ave oficial de EE.UU.es In Chinese, please write the plural of the noun and the corresponding definite article