A305206 - cp's OEIS frontend

A305206 a(n) = [x^n] exp(Sum_{k>=1} (-1)^(k+1)x^k/(k(1 - x^k)^n)).

n	a(n)
0	1
1	1
2	2
3	9
4	36
5	190
6	1070
7	6797
8	46942
9	350901
10	2806187
11	23894662
12	215598410
13	2053090936
14	20557071012
15	215697357449
16	2364810631734
17	27023086395647
18	321160376470277
19	3962047673946906
20	50648323260067319
21	669819485900273336
22	9150740338219903590
23	128965789655207156299

[1, 1, 2, 9, 36, 190, 1070, 6797, 46942, 350901, 2806187, 23894662, 215598410, 2053090936, 20557071012, 215697357449, 2364810631734, 27023086395647, 321160376470277, 3962047673946906, 50648323260067319, 669819485900273336, 9150740338219903590, 128965789655207156299]

cp's OEIS Frontend

A305206 a(n) = [x^n] exp(Sum_{k>=1} (-1)^(k+1)x^k/(k(1 - x^k)^n)).

Table of values

List of values

cp's OEIS Frontend

A305206 a(n) = [x^n] exp(Sum_{k>=1} (-1)^(k+1)*x^k/(k*(1 - x^k)^n)).

Table of values

List of values

A305206 a(n) = [x^n] exp(Sum_{k>=1} (-1)^(k+1)x^k/(k(1 - x^k)^n)).