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A279967 as a simple table

na(n)
11
21
32
42
52
67
72
89
910
1015
112
1210
131
1413
1517
168
170
1813
191
2014
219
228
230
2413
253
2630
2713
2810
292
3016
311
3223
335
347
3514
3615
372
388
3928
4032
412
4223
432
449
4549
4612
470
4848
492
5011
511
5220
533
5418
5513
5628
570
584
591
6056
615
628
6316
6435
6546
664
672
686
692
7010

[1,1,2,2,2,7,2,9,10,15,2,10,1,13,17,8,0,13,1,14,9,
 8,0,13,3,30,13,10,2,16,1,23,5,7,14,15,2,8,28,32,2,
 23,2,9,49,12,0,48,2,11,1,20,3,18,13,28,0,4,1,56,5,
 8,16,35,46,4,2,6,2,10]