A306663 - cp's OEIS frontend

A306663 Expansion of Sum_{k>=0} x^(k(k+1)) / Product_{j=1..k} (1 - jx^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	8
11	8
12	17
13	17
14	35
15	38
16	74
17	80
18	161
19	173
20	336
21	387
22	713
23	818
24	1555
25	1765
26	3248
27	3923
28	6905
29	8282
30	15012
31	17814
32	31419
33	39321
34	66679
35	82923
36	144789
37	177721
38	302789
39	390123
40	642640
41	821316
42	1390825
43	1755400
44	2910638
45	3833338
46	6165743
47	8060128
48	13322378

[1, 0, 1, 1, 1, 1, 2, 2, 4, 4, 8, 8, 17, 17, 35, 38, 74, 80, 161, 173, 336, 387, 713, 818, 1555, 1765, 3248, 3923, 6905, 8282, 15012, 17814, 31419, 39321, 66679, 82923, 144789, 177721, 302789, 390123, 642640, 821316, 1390825, 1755400, 2910638, 3833338, 6165743, 8060128, 13322378]

cp's OEIS Frontend

A306663 Expansion of Sum_{k>=0} x^(k(k+1)) / Product_{j=1..k} (1 - jx^j).

Table of values

List of values

cp's OEIS Frontend

A306663 Expansion of Sum_{k>=0} x^(k*(k+1)) / Product_{j=1..k} (1 - j*x^j).

Table of values

List of values

A306663 Expansion of Sum_{k>=0} x^(k(k+1)) / Product_{j=1..k} (1 - jx^j).