A304797 - cp's OEIS frontend

A304797 Expansion of x * (d/dx) Sum_{k>=0} k!x^(k(k+1)/2)/Product_{j=1..k} (1 - x^j).

n	a(n)
0	0
1	1
2	2
3	9
4	12
5	25
6	66
7	91
8	152
9	243
10	570
11	715
12	1212
13	1729
14	2702
15	5265
16	6960
17	10489
18	15318
19	22363
20	31100
21	57771
22	72534
23	109411
24	151032
25	219025
26	293930
27	421281
28	680820
29	883369
30	1256010
31	1727971
32	2396000
33	3235419
34	4447506
35	5894875
36	9266580
37	11691001
38	16380470
39	21774753

[0, 1, 2, 9, 12, 25, 66, 91, 152, 243, 570, 715, 1212, 1729, 2702, 5265, 6960, 10489, 15318, 22363, 31100, 57771, 72534, 109411, 151032, 219025, 293930, 421281, 680820, 883369, 1256010, 1727971, 2396000, 3235419, 4447506, 5894875, 9266580, 11691001, 16380470, 21774753]

cp's OEIS Frontend

A304797 Expansion of x * (d/dx) Sum_{k>=0} k!x^(k(k+1)/2)/Product_{j=1..k} (1 - x^j).

Table of values

List of values

cp's OEIS Frontend

A304797 Expansion of x * (d/dx) Sum_{k>=0} k!*x^(k*(k+1)/2)/Product_{j=1..k} (1 - x^j).

Table of values

List of values

A304797 Expansion of x * (d/dx) Sum_{k>=0} k!x^(k(k+1)/2)/Product_{j=1..k} (1 - x^j).