A264772 - OEIS

A264772 as a simple table

n	a(n)
0	1
1	3
2	1
3	15
4	4
5	1
6	84
7	21
8	5
9	1
10	495
11	120
12	28
13	6
14	1
15	3003
16	715
17	165
18	36
19	7
20	1
21	18564
22	4368
23	1001
24	220
25	45
26	8
27	1
28	116280
29	27132
30	6188
31	1365
32	286
33	55
34	9
35	1
36	735471
37	170544
38	38760
39	8568
40	1820
41	364
42	66
43	10
44	1
45	4686825
46	1081575
47	245157
48	54264
49	11628
50	2380
51	455
52	78
53	11
54	1

[1,3,1,15,4,1,84,21,5,1,495,120,28,6,1,3003,715, 165,36,7,1,18564,4368,1001,220,45,8,1,116280, 27132,6188,1365,286,55,9,1,735471,170544,38760, 8568,1820,364,66,10,1,4686825,1081575,245157, 54264,11628,2380,455,78,11,1]

[1,3,1,15,4,1,84,21,5,1,495,120,28,6,1,3003,715,
 165,36,7,1,18564,4368,1001,220,45,8,1,116280,
 27132,6188,1365,286,55,9,1,735471,170544,38760,
 8568,1820,364,66,10,1,4686825,1081575,245157,
 54264,11628,2380,455,78,11,1]