A119828 - cp's OEIS frontend

A119828 Number triangle T(n,k)=(2n)!/(2k)!.

n	a(n)
0	1
1	2
2	1
3	24
4	12
5	1
6	720
7	360
8	30
9	1
10	40320
11	20160
12	1680
13	56
14	1
15	3628800
16	1814400
17	151200
18	5040
19	90
20	1
21	479001600
22	239500800
23	19958400
24	665280
25	11880
26	132
27	1
28	87178291200
29	43589145600
30	3632428800
31	121080960
32	2162160
33	24024
34	182
35	1

[1, 2, 1, 24, 12, 1, 720, 360, 30, 1, 40320, 20160, 1680, 56, 1, 3628800, 1814400, 151200, 5040, 90, 1, 479001600, 239500800, 19958400, 665280, 11880, 132, 1, 87178291200, 43589145600, 3632428800, 121080960, 2162160, 24024, 182, 1]

cp's OEIS Frontend

A119828 Number triangle T(n,k)=(2n)!/(2k)!.

Table of values

List of values