A318769 - cp's OEIS frontend

A318769 Expansion of e.g.f. Product_{k>=1} (1 + x^k)^(sigma(k)/k), where sigma(k) is the sum of the divisors of k.

n	a(n)
0	1
1	1
2	3
3	17
4	83
5	639
6	5749
7	53227
8	561273
9	7216577
10	94292531
11	1352253561
12	21657812923
13	359338829407
14	6460367397093
15	126124578755939
16	2527688612931569
17	54137820027005697
18	1236730462664172643
19	29137619131277727457
20	725282418459957414051
21	18981526480933601454911

[1, 1, 3, 17, 83, 639, 5749, 53227, 561273, 7216577, 94292531, 1352253561, 21657812923, 359338829407, 6460367397093, 126124578755939, 2527688612931569, 54137820027005697, 1236730462664172643, 29137619131277727457, 725282418459957414051, 18981526480933601454911]

cp's OEIS Frontend

A318769 Expansion of e.g.f. Product_{k>=1} (1 + x^k)^(sigma(k)/k), where sigma(k) is the sum of the divisors of k.

Table of values

List of values