A290576 - cp's OEIS frontend

A290576 Apéry-like numbers Sum_{k=0..n} Sum_{l=0..n} (C(n,k)^2C(n,l)C(k,l)*C(k+l,n)).

n	a(n)
0	1
1	3
2	27
3	309
4	4059
5	57753
6	866349
7	13492251
8	216077787
9	3536145057
10	58875891777
11	994150929951
12	16984143140589
13	293036113226223
14	5098773125244483
15	89368239352074309
16	1576424378494272987
17	27964450505226314673
18	498550055166916502121

[1, 3, 27, 309, 4059, 57753, 866349, 13492251, 216077787, 3536145057, 58875891777, 994150929951, 16984143140589, 293036113226223, 5098773125244483, 89368239352074309, 1576424378494272987, 27964450505226314673, 498550055166916502121]

cp's OEIS Frontend

A290576 Apéry-like numbers Sum_{k=0..n} Sum_{l=0..n} (C(n,k)^2C(n,l)C(k,l)*C(k+l,n)).

Table of values

List of values

cp's OEIS Frontend

A290576 Apéry-like numbers Sum_{k=0..n} Sum_{l=0..n} (C(n,k)^2*C(n,l)*C(k,l)*C(k+l,n)).

Table of values

List of values

A290576 Apéry-like numbers Sum_{k=0..n} Sum_{l=0..n} (C(n,k)^2C(n,l)C(k,l)*C(k+l,n)).