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A071956 as a simple table

na(n)
12
21
32
41
53
61
72
83
93
101
115
121
132
144
153
162
175
181
197
201
212
228
233
244
255
262
277
281
2911
301
312
3210
333
345
355
362
377
381
3911
401
4113
421
432
4415
453
466
475
483
497
502
5111
521
5313
541
5517
561
572
5816
593
608
615
623
637
642
6511
661
6713
681
6917
701
7119
721
732
7419
753
769
775
784
797
803
8111
822
8313
841
8517
861
8719
881
8923
901
912
9225
933
9413

[2,1,2,1,3,1,2,3,3,1,5,1,2,4,3,2,5,1,7,1,2,8,3,4,
 5,2,7,1,11,1,2,10,3,5,5,2,7,1,11,1,13,1,2,15,3,6,
 5,3,7,2,11,1,13,1,17,1,2,16,3,8,5,3,7,2,11,1,13,1,
 17,1,19,1,2,19,3,9,5,4,7,3,11,2,13,1,17,1,19,1,23,
 1,2,25,3,13]