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A154657 as a simple table

na(n)
01
11
22
36
424
5120
6720
75040
840320
9362880
102943360
1121898800
12152622000
131017952680
146623303544
1542700751022
16276054834902
171805409270031
1812020754177001
1980930279045116
20548117873866228
213720269813727312
2225239622338694272
23170893063638209664

[1,1,2,6,24,120,720,5040,40320,362880,2943360,
 21898800,152622000,1017952680,6623303544,
 42700751022,276054834902,1805409270031,
 12020754177001,80930279045116,548117873866228,
 3720269813727312,25239622338694272,
 170893063638209664]