A246461 - cp's OEIS frontend

A246461 a(n) = Sum_{k=0..n} ((2k+1)C(n,k)C(n+k,k))^2, where C(n,k) denotes the binomial coefficient n!/(k!*(n-k)!).

n	a(n)
0	1
1	37
2	1225
3	43397
4	1563401
5	56309885
6	2020496185
7	72190600165
8	2569004841385
9	91095128385485
10	3220006254279233
11	113505318773615741
12	3991330807880182105
13	140050346341652428141
14	4904787249549605102233
15	171480516047539645266725

[1, 37, 1225, 43397, 1563401, 56309885, 2020496185, 72190600165, 2569004841385, 91095128385485, 3220006254279233, 113505318773615741, 3991330807880182105, 140050346341652428141, 4904787249549605102233, 171480516047539645266725]

cp's OEIS Frontend

A246461 a(n) = Sum_{k=0..n} ((2k+1)C(n,k)C(n+k,k))^2, where C(n,k) denotes the binomial coefficient n!/(k!*(n-k)!).

Table of values

List of values

cp's OEIS Frontend

A246461 a(n) = Sum_{k=0..n} ((2k+1)*C(n,k)*C(n+k,k))^2, where C(n,k) denotes the binomial coefficient n!/(k!*(n-k)!).

Table of values

List of values

A246461 a(n) = Sum_{k=0..n} ((2k+1)C(n,k)C(n+k,k))^2, where C(n,k) denotes the binomial coefficient n!/(k!*(n-k)!).