A158108 - cp's OEIS frontend

A158108 L.g.f.: exp(Sum_{n>=1} a(n)x^n/n) = 1 + xexp(Sum_{n>=1} sigma(n)a(n)x^n/n).

n	a(n)
1	1
2	1
3	4
4	21
5	186
6	1366
7	19433
8	180541
9	3083809
10	44941136
11	895695901
12	11809732422
13	359749783368
14	5445775854961
15	140573612743254
16	3607678852423757
17	119036988031104164
18	2273841364845589333
19	93765800142590570954

[1, 1, 4, 21, 186, 1366, 19433, 180541, 3083809, 44941136, 895695901, 11809732422, 359749783368, 5445775854961, 140573612743254, 3607678852423757, 119036988031104164, 2273841364845589333, 93765800142590570954]

cp's OEIS Frontend

A158108 L.g.f.: exp(Sum_{n>=1} a(n)x^n/n) = 1 + xexp(Sum_{n>=1} sigma(n)a(n)x^n/n).

Table of values

List of values

cp's OEIS Frontend

A158108 L.g.f.: exp(Sum_{n>=1} a(n)*x^n/n) = 1 + x*exp(Sum_{n>=1} sigma(n)*a(n)*x^n/n).

Table of values

List of values

A158108 L.g.f.: exp(Sum_{n>=1} a(n)x^n/n) = 1 + xexp(Sum_{n>=1} sigma(n)a(n)x^n/n).