A306704 - cp's OEIS frontend

A306704 Expansion of Sum_{k>=0} x^(k(k+1)/2) / Product_{j=1..k} (1 + jx^j).

n	a(n)
0	1
1	1
2	-1
3	2
4	-2
5	0
6	1
7	3
8	-5
9	-6
10	11
11	11
12	-12
13	-35
14	33
15	35
16	-22
17	-102
18	170
19	47
20	-224
21	-491
22	874
23	695
24	-598
25	-2606
26	2246
27	1503
28	-664
29	-6420
30	11590
31	2526
32	-13762
33	-34647
34	61785
35	37119
36	-32372
37	-181052
38	147105
39	104896
40	12824
41	-436333
42	799007
43	-109587
44	-868230
45	-2316921
46	4447531

[1, 1, -1, 2, -2, 0, 1, 3, -5, -6, 11, 11, -12, -35, 33, 35, -22, -102, 170, 47, -224, -491, 874, 695, -598, -2606, 2246, 1503, -664, -6420, 11590, 2526, -13762, -34647, 61785, 37119, -32372, -181052, 147105, 104896, 12824, -436333, 799007, -109587, -868230, -2316921, 4447531]

cp's OEIS Frontend

A306704 Expansion of Sum_{k>=0} x^(k(k+1)/2) / Product_{j=1..k} (1 + jx^j).

Table of values

List of values

cp's OEIS Frontend

A306704 Expansion of Sum_{k>=0} x^(k*(k+1)/2) / Product_{j=1..k} (1 + j*x^j).

Table of values

List of values

A306704 Expansion of Sum_{k>=0} x^(k(k+1)/2) / Product_{j=1..k} (1 + jx^j).