A261650 - cp's OEIS frontend

A261650 Expansion of Product_{k>=0} ((1+x^(4k+1))/(1-x^(4k+1)))^2.

n	a(n)
0	1
1	4
2	8
3	12
4	16
5	24
6	40
7	60
8	80
9	104
10	144
11	204
12	272
13	344
14	440
15	584
16	768
17	968
18	1200
19	1516
20	1936
21	2424
22	2968
23	3644
24	4528
25	5596
26	6800
27	8216
28	10000
29	12184
30	14688
31	17564
32	21056
33	25320
34	30272
35	35912
36	42576
37	50616
38	60024
39	70728
40	83136
41	97896
42	115200
43	134924
44	157504

[1, 4, 8, 12, 16, 24, 40, 60, 80, 104, 144, 204, 272, 344, 440, 584, 768, 968, 1200, 1516, 1936, 2424, 2968, 3644, 4528, 5596, 6800, 8216, 10000, 12184, 14688, 17564, 21056, 25320, 30272, 35912, 42576, 50616, 60024, 70728, 83136, 97896, 115200, 134924, 157504]

cp's OEIS Frontend

A261650 Expansion of Product_{k>=0} ((1+x^(4k+1))/(1-x^(4k+1)))^2.

Table of values

List of values

cp's OEIS Frontend

A261650 Expansion of Product_{k>=0} ((1+x^(4*k+1))/(1-x^(4*k+1)))^2.

Table of values

List of values

A261650 Expansion of Product_{k>=0} ((1+x^(4k+1))/(1-x^(4k+1)))^2.