A240558 - cp's OEIS frontend

A240558 a(n) = 2^nn!/((floor(n/2)+1)floor(n/2)!^2).

n	a(n)
0	1
1	2
2	4
3	24
4	32
5	320
6	320
7	4480
8	3584
9	64512
10	43008
11	946176
12	540672
13	14057472
14	7028736
15	210862080
16	93716480
17	3186360320
18	1274544128
19	48432676864
20	17611882496
21	739699064832
22	246566354944
23	11342052327424
24	3489862254592
25	174493112729600
26	49855175065600

[1, 2, 4, 24, 32, 320, 320, 4480, 3584, 64512, 43008, 946176, 540672, 14057472, 7028736, 210862080, 93716480, 3186360320, 1274544128, 48432676864, 17611882496, 739699064832, 246566354944, 11342052327424, 3489862254592, 174493112729600, 49855175065600]

cp's OEIS Frontend

A240558 a(n) = 2^nn!/((floor(n/2)+1)floor(n/2)!^2).

Table of values

List of values

cp's OEIS Frontend

A240558 a(n) = 2^n*n!/((floor(n/2)+1)*floor(n/2)!^2).

Table of values

List of values

A240558 a(n) = 2^nn!/((floor(n/2)+1)floor(n/2)!^2).