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A100001 as a simple table

na(n)
10
20
30
40
50
60
71
81
93
1010
1125
1295
13366
141433
155802
1624105
17102479
18445577
191992044

[0,0,0,0,0,0,1,1,3,10,25,95,366,1433,5802,24105,
 102479,445577,1992044]