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A196974 as a simple table

na(n)
11
21
31
42
57
62
73
810
910
103
115
1223
1334
1423
155
168
1757
18104
19104
2057
218
2213
23122
24386
25815
26386
27122
2813
2921
30275
311380
323675
333675
341380
35275
3621
3734
38623
394800
4020500
4131899
4220500
434800
44623
4534
4655
471394
4816794
49115563
50260394
51260394
52115563
5316794
541394
5555
5689

[1,1,1,2,7,2,3,10,10,3,5,23,34,23,5,8,57,104,104,
 57,8,13,122,386,815,386,122,13,21,275,1380,3675,
 3675,1380,275,21,34,623,4800,20500,31899,20500,
 4800,623,34,55,1394,16794,115563,260394,260394,
 115563,16794,1394,55,89]