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A145761 as a simple table

na(n)
11
21
31
41
52
63
76
89
929
1071
11252
12692
133368
1413077
1579134
16377418
172968590
1818765157
19189063004
201516592933
2119680440925
22204860397699
233422227126547
2445691959144342
25982062906171101
2616911337817136038
27468085274414196900

[1,1,1,1,2,3,6,9,29,71,252,692,3368,13077,79134,
 377418,2968590,18765157,189063004,1516592933,
 19680440925,204860397699,3422227126547,
 45691959144342,982062906171101,16911337817136038,
 468085274414196900]