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A007451 as a simple table

na(n)
01
13
23
390
418
5945
61890
712600
822680
953460
101247400
1110216206000
12157172400
131021620600
146129723600
15534386160000
1681729648000
172494674910728000
18127932046704000
192744142401800800000

[1,3,3,90,18,945,1890,12600,22680,53460,1247400,
 10216206000,157172400,1021620600,6129723600,
 534386160000,81729648000,2494674910728000,
 127932046704000,2744142401800800000]