A048619 - OEIS

A048619 as a simple table

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	3
7	3
8	4
9	2
10	10
11	5
12	30
13	15
14	7
15	7
16	56
17	28
18	252
19	126
20	60
21	30
22	330
23	165
24	396
25	198
26	286
27	143
28	2002
29	1001
30	15015
31	15015
32	7280
33	3640
34	1768
35	884
36	15912
37	7956
38	3876
39	1938
40	38760
41	19380
42	406980
43	203490
44	99484
45	49742
46	1144066
47	572033
48	1961256
49	980628

[1,1,1,1,2,1,3,3,4,2,10,5,30,15,7,7,56,28,252,126, 60,30,330,165,396,198,286,143,2002,1001,15015, 15015,7280,3640,1768,884,15912,7956,3876,1938, 38760,19380,406980,203490,99484,49742,1144066, 572033,1961256,980628]