A387017 - cp's OEIS frontend

A387017 Expansion of (Product_{k>=1} (1 - x^k)^2/(1 - 5x^k + x^(2k)) - 1)/3.

n	a(n)
1	1
2	6
3	28
4	139
5	660
6	3192
7	15260
8	73254
9	350848
10	1681650
11	8056608
12	38604748
13	184963130
14	886226880
15	4246152960
16	20344613659
17	97476826932
18	467039887908
19	2237722185188
20	10721572793580
21	51370139753240
22	246129134364792
23	1179275522335680
24	5650248517615128

[1, 6, 28, 139, 660, 3192, 15260, 73254, 350848, 1681650, 8056608, 38604748, 184963130, 886226880, 4246152960, 20344613659, 97476826932, 467039887908, 2237722185188, 10721572793580, 51370139753240, 246129134364792, 1179275522335680, 5650248517615128]

cp's OEIS Frontend

A387017 Expansion of (Product_{k>=1} (1 - x^k)^2/(1 - 5x^k + x^(2k)) - 1)/3.

Table of values

List of values

cp's OEIS Frontend

A387017 Expansion of (Product_{k>=1} (1 - x^k)^2/(1 - 5*x^k + x^(2*k)) - 1)/3.

Table of values

List of values

A387017 Expansion of (Product_{k>=1} (1 - x^k)^2/(1 - 5x^k + x^(2k)) - 1)/3.