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A100861 as a simple table

na(n)
01
11
21
31
41
53
61
76
83
91
1010
1115
121
1315
1445
1515
161
1721
18105
19105
201
2128
22210
23420
24105
251
2636
27378
281260
29945
301
3145
32630
333150
344725
35945
361
3755
38990
396930
4017325
4110395
421
4366
441485
4513860
4651975
4762370
4810395
491
5078
512145
5225740
53135135
54270270
55135135
561
5791
583003
5945045
60315315
61945945
62945945
63135135

[1,1,1,1,1,3,1,6,3,1,10,15,1,15,45,15,1,21,105,
 105,1,28,210,420,105,1,36,378,1260,945,1,45,630,
 3150,4725,945,1,55,990,6930,17325,10395,1,66,1485,
 13860,51975,62370,10395,1,78,2145,25740,135135,
 270270,135135,1,91,3003,45045,315315,945945,
 945945,135135]