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A061603 as a simple table

na(n)
01
11
21
31
41
51
61
71
81
91
103628800
1139916800
12239500800
131037836800
143632428800
1510897286400
1629059430400
1770572902400
18158789030400
19335221286400
201216451004088320000
2125545471085854720000
22281000181944401920000
232154334728240414720000

[1,1,1,1,1,1,1,1,1,1,3628800,39916800,239500800,
 1037836800,3632428800,10897286400,29059430400,
 70572902400,158789030400,335221286400,
 1216451004088320000,25545471085854720000,
 281000181944401920000,2154334728240414720000]