A306664 - cp's OEIS frontend

A306664 Expansion of Sum_{k>=0} x^(k*(k+1)) / Product_{j=1..k} (1 - x^j)^j.

n	a(n)
0	1
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	4
9	4
10	7
11	7
12	12
13	12
14	19
15	22
16	31
17	37
18	54
19	63
20	89
21	111
22	146
23	184
24	247
25	301
26	398
27	501
28	642
29	804
30	1042
31	1293
32	1663
33	2082
34	2648
35	3321
36	4229
37	5268
38	6691
39	8370
40	10553
41	13168
42	16595
43	20659
44	25929
45	32253
46	40321
47	50092
48	62489
49	77418
50	96340
51	119266
52	147998
53	182927
54	226609

[1, 0, 1, 1, 1, 1, 2, 2, 4, 4, 7, 7, 12, 12, 19, 22, 31, 37, 54, 63, 89, 111, 146, 184, 247, 301, 398, 501, 642, 804, 1042, 1293, 1663, 2082, 2648, 3321, 4229, 5268, 6691, 8370, 10553, 13168, 16595, 20659, 25929, 32253, 40321, 50092, 62489, 77418, 96340, 119266, 147998, 182927, 226609]

cp's OEIS Frontend

A306664 Expansion of Sum_{k>=0} x^(k*(k+1)) / Product_{j=1..k} (1 - x^j)^j.

Table of values

List of values