A212303 - cp's OEIS frontend

A212303 a(n) = n!/([(n-1)/2]!*[(n+1)/2]!) for n>0, a(0)=0, and where [ ] = floor.

n	a(n)
0	0
1	1
2	2
3	3
4	12
5	10
6	60
7	35
8	280
9	126
10	1260
11	462
12	5544
13	1716
14	24024
15	6435
16	102960
17	24310
18	437580
19	92378
20	1847560
21	352716
22	7759752
23	1352078
24	32449872
25	5200300
26	135207800
27	20058300
28	561632400
29	77558760
30	2326762800
31	300540195
32	9617286240
33	1166803110
34	39671305740

[0, 1, 2, 3, 12, 10, 60, 35, 280, 126, 1260, 462, 5544, 1716, 24024, 6435, 102960, 24310, 437580, 92378, 1847560, 352716, 7759752, 1352078, 32449872, 5200300, 135207800, 20058300, 561632400, 77558760, 2326762800, 300540195, 9617286240, 1166803110, 39671305740]

cp's OEIS Frontend

A212303 a(n) = n!/([(n-1)/2]!*[(n+1)/2]!) for n>0, a(0)=0, and where [ ] = floor.

Table of values

List of values