A204858 - cp's OEIS frontend

A204858 G.f.: Sum_{n>=0} n! * x^(n(n+1)/2) / Product_{k=1..n} (1 - kx^k).

n	a(n)
0	1
1	1
2	1
3	3
4	3
5	7
6	13
7	21
8	33
9	67
10	115
11	183
12	333
13	541
14	937
15	1635
16	2643
17	4327
18	7573
19	12069
20	20025
21	33427
22	54259
23	87375
24	144669
25	231541
26	374809
27	607443
28	970539
29	1545367
30	2502205
31	3947541
32	6270057
33	9997867
34	15776083
35	24832503
36	39351309
37	61552501
38	96632689

[1, 1, 1, 3, 3, 7, 13, 21, 33, 67, 115, 183, 333, 541, 937, 1635, 2643, 4327, 7573, 12069, 20025, 33427, 54259, 87375, 144669, 231541, 374809, 607443, 970539, 1545367, 2502205, 3947541, 6270057, 9997867, 15776083, 24832503, 39351309, 61552501, 96632689]

cp's OEIS Frontend

A204858 G.f.: Sum_{n>=0} n! * x^(n(n+1)/2) / Product_{k=1..n} (1 - kx^k).

Table of values

List of values

cp's OEIS Frontend

A204858 G.f.: Sum_{n>=0} n! * x^(n*(n+1)/2) / Product_{k=1..n} (1 - k*x^k).

Table of values

List of values

A204858 G.f.: Sum_{n>=0} n! * x^(n(n+1)/2) / Product_{k=1..n} (1 - kx^k).