A261563 - cp's OEIS frontend

A261563 Expansion of Product_{k>=1} ((1 + 2x^k)/(1 - 2x^k))^k.

n	a(n)
0	1
1	4
2	16
3	60
4	192
5	596
6	1744
7	4892
8	13248
9	34868
10	89296
11	223660
12	548928
13	1323060
14	3137520
15	7332332
16	16907584
17	38517444
18	86777328
19	193523404
20	427562816
21	936555044
22	2035286576
23	4390850268
24	9409096576
25	20037827876
26	42429318480
27	89369282460
28	187325508288

[1, 4, 16, 60, 192, 596, 1744, 4892, 13248, 34868, 89296, 223660, 548928, 1323060, 3137520, 7332332, 16907584, 38517444, 86777328, 193523404, 427562816, 936555044, 2035286576, 4390850268, 9409096576, 20037827876, 42429318480, 89369282460, 187325508288]

cp's OEIS Frontend

A261563 Expansion of Product_{k>=1} ((1 + 2x^k)/(1 - 2x^k))^k.

Table of values

List of values

cp's OEIS Frontend

A261563 Expansion of Product_{k>=1} ((1 + 2*x^k)/(1 - 2*x^k))^k.

Table of values

List of values

A261563 Expansion of Product_{k>=1} ((1 + 2x^k)/(1 - 2x^k))^k.