A071938 - OEIS

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A071938 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	10
11	1
12	293930
13	206253075
14	35240152720
15	3188675231420
16	202802465047245
17	10358022441395860
18	456703981505085600
19	18150420051920130975
20	190
21	293930
22	1
23	28048800
24	353697121050

[1,1,1,1,1,1,1,1,1,10,1,293930,206253075, 35240152720,3188675231420,202802465047245, 10358022441395860,456703981505085600, 18150420051920130975,190,293930,1,28048800, 353697121050]