A268499 - cp's OEIS frontend

A268499 Expansion of Product_{k>=1} ((1 + 3*x^k) / (1 + x^k)).

n	a(n)
0	1
1	2
2	0
3	8
4	-2
5	8
6	16
7	8
8	8
9	10
10	80
11	-8
12	72
13	-24
14	144
15	128
16	134
17	40
18	224
19	120
20	232
21	688
22	176
23	696
24	32
25	1194
26	-96
27	1840
28	1144
29	2248
30	288
31	2968
32	800
33	4160
34	752
35	5104
36	6438
37	4984
38	5104
39	5488
40	10960
41	4856
42	14080
43	3480
44	24408
45	15448
46	26832
47	7080
48	42120
49	11178

[1, 2, 0, 8, -2, 8, 16, 8, 8, 10, 80, -8, 72, -24, 144, 128, 134, 40, 224, 120, 232, 688, 176, 696, 32, 1194, -96, 1840, 1144, 2248, 288, 2968, 800, 4160, 752, 5104, 6438, 4984, 5104, 5488, 10960, 4856, 14080, 3480, 24408, 15448, 26832, 7080, 42120, 11178]

cp's OEIS Frontend

A268499 Expansion of Product_{k>=1} ((1 + 3*x^k) / (1 + x^k)).

Table of values

List of values