A158095 - cp's OEIS frontend

A158095 G.f.: A(x) = exp( Sum_{n>=1} 2sigma(n,n-1)x^n/n ).

n	a(n)
0	1
1	2
2	5
3	14
4	61
5	370
6	3454
7	40880
8	614346
9	10848514
10	222870183
11	5175100204
12	134514302384
13	3859406052466
14	121274242936381
15	4139268759072626
16	152532132931199062
17	6034430112251517608
18	255114747410233804986

[1, 2, 5, 14, 61, 370, 3454, 40880, 614346, 10848514, 222870183, 5175100204, 134514302384, 3859406052466, 121274242936381, 4139268759072626, 152532132931199062, 6034430112251517608, 255114747410233804986]

cp's OEIS Frontend

A158095 G.f.: A(x) = exp( Sum_{n>=1} 2sigma(n,n-1)x^n/n ).

Table of values

List of values

cp's OEIS Frontend

A158095 G.f.: A(x) = exp( Sum_{n>=1} 2*sigma(n,n-1)*x^n/n ).

Table of values

List of values

A158095 G.f.: A(x) = exp( Sum_{n>=1} 2sigma(n,n-1)x^n/n ).