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A331970 as a simple table

na(n)
10
21
31
41
51
66
71
87
91
108
111
128
131
1410
159
1611
171
1812
191
2010
2111
2214
231
2436
251
2616
2713
2812
291
3042
311
3231
3315
3420
3513
3614
371
3822
3917
4050
411
4254
431
4416
4515
4626
471
4860
491
5028
5121
5218
531
5466
5517
5664
5723
5832
591
6060
611
6234
6317
6455
6519
6678
671
6822
6927
7074
711
7278
731

[0,1,1,1,1,6,1,7,1,8,1,8,1,10,9,11,1,12,1,10,11,
 14,1,36,1,16,13,12,1,42,1,31,15,20,13,14,1,22,17,
 50,1,54,1,16,15,26,1,60,1,28,21,18,1,66,17,64,23,
 32,1,60,1,34,17,55,19,78,1,22,27,74,1,78,1]