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A099582 as a simple table

na(n)
00
10
21
34
424
5112
6560
72688
813056
962976
10304384
111469440
127096320
1334263040
14165441536
15798818304
163857055744
1718623496192
1889922273280
19434183077888
202096421666816
2110122418978816
2248875363631104
23235991130439680

[0,0,1,4,24,112,560,2688,13056,62976,304384,
 1469440,7096320,34263040,165441536,798818304,
 3857055744,18623496192,89922273280,434183077888,
 2096421666816,10122418978816,48875363631104,
 235991130439680]