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A298971 as a simple table

na(n)
10
21
31
42
51
64
71
85
93
108
111
1216
131
1420
159
1635
171
1869
191
20110
2121
22188
231
24381
257
26632
2759
281184
291
302300
311
324115
33189
347712
3525
3614939
371
3827596
39633
4052517
411
42101050
431
44190748
452247
46364724
471
48703331
4919
501342283
517713
522581430
531
544985609
55193

[0,1,1,2,1,4,1,5,3,8,1,16,1,20,9,35,1,69,1,110,21,
 188,1,381,7,632,59,1184,1,2300,1,4115,189,7712,25,
 14939,1,27596,633,52517,1,101050,1,190748,2247,
 364724,1,703331,19,1342283,7713,2581430,1,4985609,
 193]