A336713 - cp's OEIS frontend

A336713 a(0) = 1 and a(n) = (1/n) * Sum_{k=1..n} (-1)^(n-k) * binomial(n,k) * binomial(n+(n-1)*k,k-1) for n > 0.

n	a(n)
0	1
1	1
2	1
3	6
4	76
5	1447
6	37206
7	1212194
8	47975271
9	2238595055
10	120453255172
11	7347494056729
12	501273291296174
13	37833413358907566
14	3130557361463956074
15	281854137496597897755
16	27433898122963009937892
17	2870816347095046227070383
18	321430790732030793454519088

[1, 1, 1, 6, 76, 1447, 37206, 1212194, 47975271, 2238595055, 120453255172, 7347494056729, 501273291296174, 37833413358907566, 3130557361463956074, 281854137496597897755, 27433898122963009937892, 2870816347095046227070383, 321430790732030793454519088]

cp's OEIS Frontend

A336713 a(0) = 1 and a(n) = (1/n) * Sum_{k=1..n} (-1)^(n-k) * binomial(n,k) * binomial(n+(n-1)*k,k-1) for n > 0.

Table of values

List of values