A226284 - cp's OEIS frontend

A226284 a(n) = [n/2]![(n+1)/2]!C([n/2],3)*C([(n+1)/2],3).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	36
7	576
8	9216
9	115200
10	1440000
11	17280000
12	207360000
13	2540160000
14	31116960000
15	398297088000
16	5098202726400
17	68825736806400
18	929147446886400
19	13273534955520000
20	189621927936000000
21	2868031660032000000
22	43378978857984000000
23	694063661727744000000

[0, 0, 0, 0, 0, 36, 576, 9216, 115200, 1440000, 17280000, 207360000, 2540160000, 31116960000, 398297088000, 5098202726400, 68825736806400, 929147446886400, 13273534955520000, 189621927936000000, 2868031660032000000, 43378978857984000000, 694063661727744000000]

cp's OEIS Frontend

A226284 a(n) = [n/2]![(n+1)/2]!C([n/2],3)*C([(n+1)/2],3).

Table of values

List of values

cp's OEIS Frontend

A226284 a(n) = [n/2]!*[(n+1)/2]!*C([n/2],3)*C([(n+1)/2],3).

Table of values

List of values

A226284 a(n) = [n/2]![(n+1)/2]!C([n/2],3)*C([(n+1)/2],3).