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A232224 as a simple table

na(n)
00
10
20
31
420
5195
61430
79009
851688
9278460
101434120
117141530
1234648856
13164663785
14769491450
153546222225
1616152872400
1772846725160
18325722299760
191445598337950
206373942543800
2127942072562950
22121863923024844
23529043313674106
242287209524819120

[0,0,0,1,20,195,1430,9009,51688,278460,1434120,
 7141530,34648856,164663785,769491450,3546222225,
 16152872400,72846725160,325722299760,
 1445598337950,6373942543800,27942072562950,
 121863923024844,529043313674106,2287209524819120]