A156303 - cp's OEIS frontend

A156303 G.f.: A(x) = exp( Sum_{n>=1} sigma(n^2)*x^n/n ), a power series in x with integer coefficients.

n	a(n)
0	1
1	1
2	4
3	8
4	20
5	38
6	88
7	162
8	336
9	624
10	1211
11	2195
12	4109
13	7295
14	13190
15	23072
16	40618
17	69838
18	120486
19	204006
20	345595
21	577387
22	962961
23	1588483
24	2613930
25	4262138
26	6928799
27	11179251
28	17976330
29	28720552
30	45729595
31	72401921
32	114239033

[1, 1, 4, 8, 20, 38, 88, 162, 336, 624, 1211, 2195, 4109, 7295, 13190, 23072, 40618, 69838, 120486, 204006, 345595, 577387, 962961, 1588483, 2613930, 4262138, 6928799, 11179251, 17976330, 28720552, 45729595, 72401921, 114239033]

cp's OEIS Frontend

A156303 G.f.: A(x) = exp( Sum_{n>=1} sigma(n^2)*x^n/n ), a power series in x with integer coefficients.

Table of values

List of values