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A140835 as a simple table

na(n)
10
21
31
41
52
61
72
86
96
102
113
1212
1318
1412
153
165
1725
1825
1925
2025
215
228
2348
24120
25160
26120
2748
288
2913
3091
3191
3291
3391
3491
3591
3613
3721
38168
39588
40168
411470
42168
43588
44168
4521
4634
47306
48306
492856
50306
51306
522856
53306
54306
5534
5655
57550
582475
59550
602475
6113860
622475
63550
642475

[0,1,1,1,2,1,2,6,6,2,3,12,18,12,3,5,25,25,25,25,5,
 8,48,120,160,120,48,8,13,91,91,91,91,91,91,13,21,
 168,588,168,1470,168,588,168,21,34,306,306,2856,
 306,306,2856,306,306,34,55,550,2475,550,2475,
 13860,2475,550,2475]