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A190314 as a simple table

na(n)
00
11
25
338
4390
55049
678960
71447886
830461872
9723267369
1019130274880
11557794986814
1217775137850624
13614607897664305
1422917282895782912
15916671255921364950
1639152092883971954688
171778431981539189344177
1885607684151779322519552
194353142694568849287025142
20233169669255877689516032000

[0,1,5,38,390,5049,78960,1447886,30461872,
 723267369,19130274880,557794986814,17775137850624,
 614607897664305,22917282895782912,
 916671255921364950,39152092883971954688,
 1778431981539189344177,85607684151779322519552,
 4353142694568849287025142,
 233169669255877689516032000]