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A060052 as a simple table

na(n)
21
31
44
50
615
725
83
90
1030
11222
12226
1340
140
1530
161230
173670
182706
19535
2015
210
220
235040
2439900
2569450
2640405
278141
28420
290
300
3115120
32345240
331254960
341498035
35722275
36142877
379730
38105
390
400
4130240
422492280
4318587520
4440701780
4536450820
4615031204
472871240
48226828
495040

[1,1,4,0,15,25,3,0,30,222,226,40,0,30,1230,3670,
 2706,535,15,0,0,5040,39900,69450,40405,8141,420,0,
 0,15120,345240,1254960,1498035,722275,142877,9730,
 105,0,0,30240,2492280,18587520,40701780,36450820,
 15031204,2871240,226828,5040]