A226282 - cp's OEIS frontend

A226282 a(n) = [n/2]![(n+1)/2]!C([n/2],1)*C([(n+1)/2],1).

n	a(n)
1	0
2	1
3	4
4	16
5	72
6	324
7	1728
8	9216
9	57600
10	360000
11	2592000
12	18662400
13	152409600
14	1244678400
15	11379916800
16	104044953600
17	1053455155200
18	10666233446400
19	118513704960000
20	1316818944000000
21	15933509222400000
22	192795461591040000
23	2523867860828160000
24	33039724723568640000

[0, 1, 4, 16, 72, 324, 1728, 9216, 57600, 360000, 2592000, 18662400, 152409600, 1244678400, 11379916800, 104044953600, 1053455155200, 10666233446400, 118513704960000, 1316818944000000, 15933509222400000, 192795461591040000, 2523867860828160000, 33039724723568640000]

cp's OEIS Frontend

A226282 a(n) = [n/2]![(n+1)/2]!C([n/2],1)*C([(n+1)/2],1).

Table of values

List of values

cp's OEIS Frontend

A226282 a(n) = [n/2]!*[(n+1)/2]!*C([n/2],1)*C([(n+1)/2],1).

Table of values

List of values

A226282 a(n) = [n/2]![(n+1)/2]!C([n/2],1)*C([(n+1)/2],1).