A132911 - cp's OEIS frontend

A132911 a(n) = (n+1)(2n)!/2^n.

n	a(n)
0	1
1	2
2	18
3	360
4	12600
5	680400
6	52390800
7	5448643200
8	735566832000
9	125046361440000
10	26134689540960000
11	6585941764321920000
12	1969196587532254080000
13	689218805636288928000000
14	279133616282697015840000000
15	129517997955171415349760000000
16	68255984922375335889323520000000

[1, 2, 18, 360, 12600, 680400, 52390800, 5448643200, 735566832000, 125046361440000, 26134689540960000, 6585941764321920000, 1969196587532254080000, 689218805636288928000000, 279133616282697015840000000, 129517997955171415349760000000, 68255984922375335889323520000000]

cp's OEIS Frontend

A132911 a(n) = (n+1)(2n)!/2^n.

Table of values

List of values

cp's OEIS Frontend

A132911 a(n) = (n+1)*(2*n)!/2^n.

Table of values

List of values

A132911 a(n) = (n+1)(2n)!/2^n.