A316961 - cp's OEIS frontend

A316961 Expansion of Product_{k>=1} 1/(1 - sigma(k)*x^k), where sigma(k) is the sum of the divisors of k (A000203).

n	a(n)
0	1
1	1
2	4
3	8
4	24
5	42
6	118
7	208
8	524
9	961
10	2191
11	3994
12	9020
13	16142
14	34500
15	62814
16	130496
17	234474
18	478334
19	855982
20	1712012
21	3061230
22	6003546
23	10689178
24	20783796
25	36789875
26	70540531
27	124812892
28	237022708
29	417422168
30	786509778
31	1381137702
32	2583046168
33	4526024200
34	8402928681

[1, 1, 4, 8, 24, 42, 118, 208, 524, 961, 2191, 3994, 9020, 16142, 34500, 62814, 130496, 234474, 478334, 855982, 1712012, 3061230, 6003546, 10689178, 20783796, 36789875, 70540531, 124812892, 237022708, 417422168, 786509778, 1381137702, 2583046168, 4526024200, 8402928681]

cp's OEIS Frontend

A316961 Expansion of Product_{k>=1} 1/(1 - sigma(k)*x^k), where sigma(k) is the sum of the divisors of k (A000203).

Table of values

List of values