A376854 - cp's OEIS frontend

A376854 G.f.: Sum_{k>=0} x^(k^2) * Product_{j=1..k} ((1 + x^j)/(1 - x^j))^2.

n	a(n)
0	1
1	1
2	4
3	8
4	13
5	20
6	32
7	52
8	84
9	133
10	204
11	304
12	444
13	636
14	900
15	1264
16	1761
17	2440
18	3364
19	4608
20	6276
21	8496
22	11424
23	15268
24	20284
25	26789
26	35196
27	46016
28	59884
29	77612
30	100204
31	128900
32	165260
33	211200
34	269072
35	341792
36	432917
37	546788
38	688728
39	865200
40	1084048
41	1354816
42	1689048

[1, 1, 4, 8, 13, 20, 32, 52, 84, 133, 204, 304, 444, 636, 900, 1264, 1761, 2440, 3364, 4608, 6276, 8496, 11424, 15268, 20284, 26789, 35196, 46016, 59884, 77612, 100204, 128900, 165260, 211200, 269072, 341792, 432917, 546788, 688728, 865200, 1084048, 1354816, 1689048]

cp's OEIS Frontend

A376854 G.f.: Sum_{k>=0} x^(k^2) * Product_{j=1..k} ((1 + x^j)/(1 - x^j))^2.

Table of values

List of values