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A195983 as a simple table

na(n)
01
10
21
32
47
532
6189
71382
812090
9123220
101433760
1118750856
12272243150
134344694984
1475590125814
151423923579636
1628872306351182
17626986388773656
1814518030696953650
19357068944503961140
209296168815245928682
21255409012110904594768
227385107814017356745382

[1,0,1,2,7,32,189,1382,12090,123220,1433760,
 18750856,272243150,4344694984,75590125814,
 1423923579636,28872306351182,626986388773656,
 14518030696953650,357068944503961140,
 9296168815245928682,255409012110904594768,
 7385107814017356745382]