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A154658 as a simple table

na(n)
01
11
22
36
424
5120
6720
75040
840320
9362880
103628800
1133022080
12277280640
132184341040
1416427628720
15119892387720
16861175365144
176157828055310
1844222780245622
19321113303226243
202369364111428885
2117667206334000068
22132553643382927196
23997400200347756816

[1,1,2,6,24,120,720,5040,40320,362880,3628800,
 33022080,277280640,2184341040,16427628720,
 119892387720,861175365144,6157828055310,
 44222780245622,321113303226243,2369364111428885,
 17667206334000068,132553643382927196,
 997400200347756816]