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A191459 as a simple table

na(n)
01
11
24
332
4404
57136
6164088
74683680
8160473988
96437653568
10296657482888
1115467576203136
12901391710293832
1358122426582341120
144111838048797360624
15316858691136196764672
1626432968974665127895908
172374343115004631725352960

[1,1,4,32,404,7136,164088,4683680,160473988,
 6437653568,296657482888,15467576203136,
 901391710293832,58122426582341120,
 4111838048797360624,316858691136196764672,
 26432968974665127895908,2374343115004631725352960]