A156234 - cp's OEIS frontend

A156234 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)A000204(n)x^n/n ).

n	a(n)
0	1
1	1
2	5
3	10
4	30
5	63
6	170
7	355
8	880
9	1875
10	4349
11	9189
12	20810
13	43355
14	95140
15	198247
16	424527
17	875965
18	1849535
19	3781820
20	7873167
21	16005196
22	32883560
23	66390850
24	135198990
25	271051271
26	546931398
27	1090751095
28	2183512495
29	4329540830

[1, 1, 5, 10, 30, 63, 170, 355, 880, 1875, 4349, 9189, 20810, 43355, 95140, 198247, 424527, 875965, 1849535, 3781820, 7873167, 16005196, 32883560, 66390850, 135198990, 271051271, 546931398, 1090751095, 2183512495, 4329540830]

cp's OEIS Frontend

A156234 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)A000204(n)x^n/n ).

Table of values

List of values

cp's OEIS Frontend

A156234 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)*A000204(n)*x^n/n ).

Table of values

List of values

A156234 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)A000204(n)x^n/n ).