1, 5, 13, 25, 41, 61 The general term formula of!

1, 5, 13, 25, 41, 61 The general term formula of!


(2n-2)n+1



General term formula of sequence 1,1,2,4,8,16,32?
I understand the general formula of 1,2,4,8,16,32. But how to break this one


When n = 1, A1 = 1
When n ≥ 2:
Starting from the second term, 1,2,4,8,16,32 Is an equal ratio sequence with a common ratio of 2,
Because the general formula is an = 2 ^ (n-2)
Therefore, a general formula of this sequence is as follows:
1 n=1
an=
2^(n-2) n≥2

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