A165457 - cp's OEIS frontend

A165457 a(n) = (2n+1)!(2*n+3)/3.

n	a(n)
0	1
1	10
2	280
3	15120
4	1330560
5	172972800
6	31135104000
7	7410154752000
8	2252687044608000
9	851515702861824000
10	391697223316439040000
11	215433472824041472000000
12	139600890389978873856000000

[1, 10, 280, 15120, 1330560, 172972800, 31135104000, 7410154752000, 2252687044608000, 851515702861824000, 391697223316439040000, 215433472824041472000000, 139600890389978873856000000]

cp's OEIS Frontend

A165457 a(n) = (2n+1)!(2*n+3)/3.

Table of values

List of values

cp's OEIS Frontend

A165457 a(n) = (2*n+1)!*(2*n+3)/3.

Table of values

List of values

A165457 a(n) = (2n+1)!(2*n+3)/3.