A formula an of sequence 1 2 / 3 3 / 5 4 / 7 5 / 9 is

A formula an of sequence 1 2 / 3 3 / 5 4 / 7 5 / 9 is


n/(2n-1)



Sequence 1,2,2,3,3,3,4,4,4,5,5,5,5,5 The general formula of is?


The nth term of a sequence is an if an = K
There are
1+2+...+(k-1)



2,5,10,17,26,37……


Sn=n^2+1