A007004 - cp's OEIS frontend

A007004 a(n) = (3n)! / ((n+1)(n!)^3).

n	a(n)
0	1
1	3
2	30
3	420
4	6930
5	126126
6	2450448
7	49884120
8	1051723530
9	22787343150
10	504636071940
11	11377249621920
12	260363981732400
13	6034149862347600
14	141371511060715200
15	3343436236585914480
16	79726203788589122490
17	1914992149823954412750
18	46295775130831740013500

[1, 3, 30, 420, 6930, 126126, 2450448, 49884120, 1051723530, 22787343150, 504636071940, 11377249621920, 260363981732400, 6034149862347600, 141371511060715200, 3343436236585914480, 79726203788589122490, 1914992149823954412750, 46295775130831740013500]

cp's OEIS Frontend

A007004 a(n) = (3n)! / ((n+1)(n!)^3).

Table of values

List of values

cp's OEIS Frontend

A007004 a(n) = (3*n)! / ((n+1)*(n!)^3).

Table of values

List of values

A007004 a(n) = (3n)! / ((n+1)(n!)^3).