A283121 - cp's OEIS frontend

A283121 Expansion of exp( Sum_{n>=1} sigma(9n)x^n/n ) in powers of x.

n	a(n)
0	1
1	13
2	104
3	633
4	3224
5	14404
6	58151
7	216294
8	751582
9	2464860
10	7689669
11	22961822
12	65955677
13	182985947
14	492016590
15	1285829996
16	3274100475
17	8139933477
18	19795490575
19	47165634583
20	110259083454
21	253208634687
22	571880965638
23	1271549402110
24	2785836824325
25	6019078365425

[1, 13, 104, 633, 3224, 14404, 58151, 216294, 751582, 2464860, 7689669, 22961822, 65955677, 182985947, 492016590, 1285829996, 3274100475, 8139933477, 19795490575, 47165634583, 110259083454, 253208634687, 571880965638, 1271549402110, 2785836824325, 6019078365425]

cp's OEIS Frontend

A283121 Expansion of exp( Sum_{n>=1} sigma(9n)x^n/n ) in powers of x.

Table of values

List of values

cp's OEIS Frontend

A283121 Expansion of exp( Sum_{n>=1} sigma(9*n)*x^n/n ) in powers of x.

Table of values

List of values

A283121 Expansion of exp( Sum_{n>=1} sigma(9n)x^n/n ) in powers of x.