A076151 - cp's OEIS frontend

A076151 a(n) = (n-1)!binomial(3n,n)/(3(2n+1)).

n	a(n)
2	1
3	8
4	110
5	2184
6	57120
7	1860480
8	72681840
9	3315312000
10	173059286400
11	10178348544000
12	666172912204800
13	48032775105638400
14	3783468344527872000
15	323279062935013785600
16	29783920485745730304000
17	2943352142120754524160000
18	310589942708652231905280000

[1, 8, 110, 2184, 57120, 1860480, 72681840, 3315312000, 173059286400, 10178348544000, 666172912204800, 48032775105638400, 3783468344527872000, 323279062935013785600, 29783920485745730304000, 2943352142120754524160000, 310589942708652231905280000]

cp's OEIS Frontend

A076151 a(n) = (n-1)!binomial(3n,n)/(3(2n+1)).

Table of values

List of values

cp's OEIS Frontend

A076151 a(n) = (n-1)!*binomial(3*n,n)/(3*(2*n+1)).

Table of values

List of values

A076151 a(n) = (n-1)!binomial(3n,n)/(3(2n+1)).