A375180 - cp's OEIS frontend

A375180 a(n) = Sum_{k = 0..n-1} (-1)^(n+k+1)binomial(3n, k)^3.

n	a(n)
0	0
1	1
2	215
3	45928
4	10362231
5	2450260001
6	600869373182
7	151570671244560
8	39096342054496887
9	10267275084850974619
10	2736324289110748127715
11	738255282011665067114400
12	201254884472471159485086750
13	55352399437924814524429123488
14	15341068552569688728602977821596

[0, 1, 215, 45928, 10362231, 2450260001, 600869373182, 151570671244560, 39096342054496887, 10267275084850974619, 2736324289110748127715, 738255282011665067114400, 201254884472471159485086750, 55352399437924814524429123488, 15341068552569688728602977821596]

cp's OEIS Frontend

A375180 a(n) = Sum_{k = 0..n-1} (-1)^(n+k+1)binomial(3n, k)^3.

Table of values

List of values

cp's OEIS Frontend

A375180 a(n) = Sum_{k = 0..n-1} (-1)^(n+k+1)*binomial(3*n, k)^3.

Table of values

List of values

A375180 a(n) = Sum_{k = 0..n-1} (-1)^(n+k+1)binomial(3n, k)^3.