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A279288 as a simple table

na(n)
11
22
31
43
51
62
71
81
91
101
111
123
131
142
151
165
171
181
191
203
211
222
231
241
253
261
272
281
291
301
311
323
331
341
351
363
371
382
391
401
411
422
431
443
451
462
471
485
491
503
511
521
531
544
551
561
571
581
591
603
611
622
631
647
651
662
671
683
691
701
711
721
731
741
753
761
771
781
791
805
815
821
831
841
851
862
871

[1,2,1,3,1,2,1,1,1,1,1,3,1,2,1,5,1,1,1,3,1,2,1,1,
 3,1,2,1,1,1,1,3,1,1,1,3,1,2,1,1,1,2,1,3,1,2,1,5,1,
 3,1,1,1,4,1,1,1,1,1,3,1,2,1,7,1,2,1,3,1,1,1,1,1,1,
 3,1,1,1,1,5,5,1,1,1,1,2,1]