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A262961 as a simple table

na(n)
10
21
32
415
5302
612559
7900288
898986140
915459635718
103251842717671
11885987204390450
12303482789415233775
13127643176985672421000
1464668997044706349592900
1538844990446097247188562800
1627296481783843922533011100000
1722184577644604207037479874293750

[0,1,2,15,302,12559,900288,98986140,15459635718,
 3251842717671,885987204390450,303482789415233775,
 127643176985672421000,64668997044706349592900,
 38844990446097247188562800,
 27296481783843922533011100000,
 22184577644604207037479874293750]