In the known equal ratio sequence {an}, A2 = 6, A5 = 162, find the first n terms and Sn of the sequence {an}

If [A5] / [A2] = Q & # 179;, then Q & # 179; = 27, q = 3, so A1 = 2, then Sn = [A1 (1-1 ^ n] / (1-Q) = 3 ^ n-1

RELATED INFORMATIONS

1. It is known that the sequence {an} is an equal ratio sequence, A2 = 6, A5 = 162. (1) find the general term formula of the sequence {an}; (2) let Sn be the sum of the first n terms of the sequence {an}, and prove that Sn · SN + 2s2n + 1 ≤ 1
2. In order to know A2 = 6, A5 = 162 in the equal ratio sequence {an}, find the first n terms and Sn of the sequence {an}
3. 2、6、18、54、（）、（）
4. 9、18、54、5、10、30、7、()、（）
5. Find the rules, 18, 9, 10, 5, 6, 3, (), (). What do you fill in the brackets? Find the rules, 18, 9, 10, 5, 6, 3, (), (). What do you fill in the brackets?
6. Fill in the blanks: 18,9, () 4.5 3.6
7. 486162,54, (), (), 25,5,10,30120, () () 25200 486,162,54,（）,（）,2 5,5,10,30,120,（）（）25200 Find the law
8. Fill in the figures according to the regulations （1）（）,2,3,6,5,10,7,（）；（2）40,20,（）,5； (3) 1,2,4,5,7,8,10,(),().
9. First find out the rules, then fill in the numbers （1）1,1.1,1.3,1.6,（ ),( ),3.1,( ）.
10. Fill in the numbers according to the regulations: 1 / 4, 4 / 9, (), 16 / 25, ()
11. It is known that the sequence {an} is an equal ratio sequence, A2 = 6, A5 = 162 (1) find the general term formula of the sequence {an} (2) if the first term n and Sn of the sequence {an} are more than 50, find the minimum value of n
12. It is known that the sequence {an} is an equal ratio sequence, A2 = 6, A5 = 162, An = 2 * 3 ^ (n-1), if Sn = 242
13. General term formula of sequence 1 / 2,2 / 5,1 / 3,2 / 7
14. A general term formula sequence 2, - 6,18, - 54. A general term formula
15. What is the general term formula of sequence 1 / 2, - 1 / 2,5 / 18, - 7 / 54
16. The general term formula of 2,6,18,54 series?
17. The law of the number in this column is that the second number is one more than the first number, and the third number is one more than the second number More than 2 and so on. What is the remainder of the 1996 number divided by 5 It's also a process,
18. One column number 1,2,3,7,11,16,22,29 The rule of this series of numbers is that the second number is one more than the first number, The third number is 2 more than the second number, the fourth number is 3 more than the third number, and so on?
19. A series of numbers 1, 2, 3, 4, 7, 11, 16, 22, 29. The rule of this series of numbers is that the second number is one more than the first number; the number is one more than the first number The fourth number is 3 more than the third number, and so on?
20. Number of columns 1, 2, 4, 7, 11, 16, 22, 29 The rule of this series of numbers is that the second number is 1 more than the first number; the third number is 2 more than the second number; the second number is 1 more than the first number;