A322904 - cp's OEIS frontend

A322904 a(n) = Sum_{k=0..n} binomial(2n+1,2k+1)(n^2-1)^(n-k)n^(2*k).

n	a(n)
0	1
1	1
2	181
3	38081
4	14526601
5	8943235489
6	8138661470941
7	10287228590683393
8	17254778510170993681
9	37095265466946847758401
10	99474891266913130060486021
11	325534304813775692747248543681
12	1276941308627620432293188401109401
13	5914558735952850788377566338591400673

[1, 1, 181, 38081, 14526601, 8943235489, 8138661470941, 10287228590683393, 17254778510170993681, 37095265466946847758401, 99474891266913130060486021, 325534304813775692747248543681, 1276941308627620432293188401109401, 5914558735952850788377566338591400673]

cp's OEIS Frontend

A322904 a(n) = Sum_{k=0..n} binomial(2n+1,2k+1)(n^2-1)^(n-k)n^(2*k).

Table of values

List of values

cp's OEIS Frontend

A322904 a(n) = Sum_{k=0..n} binomial(2*n+1,2*k+1)*(n^2-1)^(n-k)*n^(2*k).

Table of values

List of values

A322904 a(n) = Sum_{k=0..n} binomial(2n+1,2k+1)(n^2-1)^(n-k)n^(2*k).