A283224 - cp's OEIS frontend

A283224 Expansion of exp( Sum_{n>=1} sigma_2(2n)x^n/n ) in powers of x.

n	a(n)
0	1
1	5
2	23
3	90
4	317
5	1036
6	3192
7	9358
8	26336
9	71542
10	188440
11	483007
12	1208275
13	2956941
14	7093531
15	16709523
16	38706389
17	88281394
18	198474497
19	440263342
20	964424210
21	2087882510
22	4470194335
23	9471079495
24	19868723042
25	41291454537
26	85049747913
27	173697766646

[1, 5, 23, 90, 317, 1036, 3192, 9358, 26336, 71542, 188440, 483007, 1208275, 2956941, 7093531, 16709523, 38706389, 88281394, 198474497, 440263342, 964424210, 2087882510, 4470194335, 9471079495, 19868723042, 41291454537, 85049747913, 173697766646]

cp's OEIS Frontend

A283224 Expansion of exp( Sum_{n>=1} sigma_2(2n)x^n/n ) in powers of x.

Table of values

List of values

cp's OEIS Frontend

A283224 Expansion of exp( Sum_{n>=1} sigma_2(2*n)*x^n/n ) in powers of x.

Table of values

List of values

A283224 Expansion of exp( Sum_{n>=1} sigma_2(2n)x^n/n ) in powers of x.