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A154654 as a simple table

na(n)
01
11
22
36
424
5120
6720
73720
817304
976110
10329462
111441923
126487445
1329555588
14135025756
15615260976
162791161792
1712618600768
1857008446080
19257708989200
201166042944564
215279435858788
2223908888017477
23108262665958797
24490132089640318
252218641353956314

[1,1,2,6,24,120,720,3720,17304,76110,329462,
 1441923,6487445,29555588,135025756,615260976,
 2791161792,12618600768,57008446080,257708989200,
 1166042944564,5279435858788,23908888017477,
 108262665958797,490132089640318,2218641353956314]