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A358446 as a simple table

na(n)
01
11
24
39
456
5190
61704
77644
893120
9516240
108136000
1153523360
121047548160
137961241600
14187132377600
151611967392000
1644311886438400
17426483893606400
1813428757601280000
19142790947407360000
205066854992138240000
2158981696577556480000
222328441680297779200000

[1,1,4,9,56,190,1704,7644,93120,516240,8136000,
 53523360,1047548160,7961241600,187132377600,
 1611967392000,44311886438400,426483893606400,
 13428757601280000,142790947407360000,
 5066854992138240000,58981696577556480000,
 2328441680297779200000]