A383874 - cp's OEIS frontend

A383874 a(n) = (3n+1)!(3n)!/((2n)!*((n+1)!)^2).

n	a(n)
0	1
1	18
2	4200
3	3175200
4	5137292160
5	14544244915200
6	64008493310361600
7	405192226643043840000
8	3493057136053143859200000
9	39378260464472988708249600000
10	562659674639968187756457984000000
11	9940535265182157971578474463232000000
12	212816707229761791940688046273331200000000

[1, 18, 4200, 3175200, 5137292160, 14544244915200, 64008493310361600, 405192226643043840000, 3493057136053143859200000, 39378260464472988708249600000, 562659674639968187756457984000000, 9940535265182157971578474463232000000, 212816707229761791940688046273331200000000]

cp's OEIS Frontend

A383874 a(n) = (3n+1)!(3n)!/((2n)!*((n+1)!)^2).

Table of values

List of values

cp's OEIS Frontend

A383874 a(n) = (3*n+1)!*(3*n)!/((2*n)!*((n+1)!)^2).

Table of values

List of values

A383874 a(n) = (3n+1)!(3n)!/((2n)!*((n+1)!)^2).