A075132 - cp's OEIS frontend

A075132 a(0)=1; for n > 0, a(n)=sum(binomial(n,k)binomial(n+k,k+1)binomial(n+k+1,k),k=0..n)/n.

n	a(n)
0	1
1	4
2	33
3	356
4	4415
5	59690
6	855925
7	12809620
8	198034395
9	3140695856
10	50845026815
11	837207042270
12	13982565667915
13	236366796137230
14	4037392483733629
15	69589308151724084
16	1209013441314791891

[1, 4, 33, 356, 4415, 59690, 855925, 12809620, 198034395, 3140695856, 50845026815, 837207042270, 13982565667915, 236366796137230, 4037392483733629, 69589308151724084, 1209013441314791891]

cp's OEIS Frontend

A075132 a(0)=1; for n > 0, a(n)=sum(binomial(n,k)binomial(n+k,k+1)binomial(n+k+1,k),k=0..n)/n.

Table of values

List of values

cp's OEIS Frontend

A075132 a(0)=1; for n > 0, a(n)=sum(binomial(n,k)*binomial(n+k,k+1)*binomial(n+k+1,k),k=0..n)/n.

Table of values

List of values

A075132 a(0)=1; for n > 0, a(n)=sum(binomial(n,k)binomial(n+k,k+1)binomial(n+k+1,k),k=0..n)/n.