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A105606 as a simple table

na(n)
11
21
31
42
51
610
71
812
95
1058
111
12420
131
14338
15145
16408
171
1813790
191
2014268
21845
2211482
231
24471240
2529
2666922
27985
28484692
291
30111944350
311
32470832
3328705
342273378
354901
36543353580
371
3813250218
39167305
40543810552
411
42129202326890
431
44559334148
4538419925
46450117362

[1,1,1,2,1,10,1,12,5,58,1,420,1,338,145,408,1,
 13790,1,14268,845,11482,1,471240,29,66922,985,
 484692,1,111944350,1,470832,28705,2273378,4901,
 543353580,1,13250218,167305,543810552,1,
 129202326890,1,559334148,38419925,450117362]