A304787 - cp's OEIS frontend

A304787 Expansion of Product_{k>=1} (1 + x^k)^(binomial(2*k,k)/(k+1)).

n	a(n)
0	1
1	1
2	2
3	7
4	20
5	67
6	222
7	758
8	2617
9	9189
10	32554
11	116494
12	420046
13	1525221
14	5571065
15	20457808
16	75476447
17	279636977
18	1039965746
19	3880891892
20	14527657602
21	54537434161
22	205270200229
23	774460385687
24	2928429307876
25	11095878177649
26	42122749335654
27	160192845018335
28	610224764470011

[1, 1, 2, 7, 20, 67, 222, 758, 2617, 9189, 32554, 116494, 420046, 1525221, 5571065, 20457808, 75476447, 279636977, 1039965746, 3880891892, 14527657602, 54537434161, 205270200229, 774460385687, 2928429307876, 11095878177649, 42122749335654, 160192845018335, 610224764470011]

cp's OEIS Frontend

A304787 Expansion of Product_{k>=1} (1 + x^k)^(binomial(2*k,k)/(k+1)).

Table of values

List of values