A113551 - cp's OEIS frontend

A113551 a(n) = product of next n even numbers beginning with n if n is even, otherwise product of next n odd numbers beginning with n.

n	a(n)
1	1
2	8
3	105
4	1920
5	45045
6	1290240
7	43648605
8	1703116800
9	75293843625
10	3719607091200
11	203067496256625
12	12140797545676800
13	788917222956988125
14	55362036808286208000
15	4172583192219510193125
16	336158287499913854976000

[1, 8, 105, 1920, 45045, 1290240, 43648605, 1703116800, 75293843625, 3719607091200, 203067496256625, 12140797545676800, 788917222956988125, 55362036808286208000, 4172583192219510193125, 336158287499913854976000]

cp's OEIS Frontend

A113551 a(n) = product of next n even numbers beginning with n if n is even, otherwise product of next n odd numbers beginning with n.

Table of values

List of values