A385667 - cp's OEIS frontend

A385667 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(3n+1,k) binomial(3*n-k,n-k).

n	a(n)
0	1
1	10
2	151
3	2542
4	44983
5	819160
6	15197404
7	285653350
8	5421341311
9	103659081034
10	1993769491591
11	38532753357064
12	747680491747876
13	14556620712375856
14	284217498703106224
15	5563106991308471062
16	109124768598722692111
17	2144648671343440349182

[1, 10, 151, 2542, 44983, 819160, 15197404, 285653350, 5421341311, 103659081034, 1993769491591, 38532753357064, 747680491747876, 14556620712375856, 284217498703106224, 5563106991308471062, 109124768598722692111, 2144648671343440349182]

cp's OEIS Frontend

A385667 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(3n+1,k) binomial(3*n-k,n-k).

Table of values

List of values

cp's OEIS Frontend

A385667 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(3*n+1,k) * binomial(3*n-k,n-k).

Table of values

List of values

A385667 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(3n+1,k) binomial(3*n-k,n-k).