A159309 - cp's OEIS frontend

A159309 L.g.f.: Sum_{n>=1} a(n)x^n/n = Sum_{n>=1} (1 + sigma(n)x)^n * x^n/n.

n	a(n)
1	1
2	3
3	10
4	35
5	116
6	606
7	2990
8	11203
9	65368
10	567558
11	3229942
12	12730946
13	78628616
14	666394746
15	3968286590
16	21143707843
17	160244432497
18	1602468019110
19	20852615681805
20	320475672814590
21	4102188681702086
22	36438823274699332

[1, 3, 10, 35, 116, 606, 2990, 11203, 65368, 567558, 3229942, 12730946, 78628616, 666394746, 3968286590, 21143707843, 160244432497, 1602468019110, 20852615681805, 320475672814590, 4102188681702086, 36438823274699332]

cp's OEIS Frontend

A159309 L.g.f.: Sum_{n>=1} a(n)x^n/n = Sum_{n>=1} (1 + sigma(n)x)^n * x^n/n.

Table of values

List of values

cp's OEIS Frontend

A159309 L.g.f.: Sum_{n>=1} a(n)*x^n/n = Sum_{n>=1} (1 + sigma(n)*x)^n * x^n/n.

Table of values

List of values

A159309 L.g.f.: Sum_{n>=1} a(n)x^n/n = Sum_{n>=1} (1 + sigma(n)x)^n * x^n/n.