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A237983 as a simple table

na(n)
11
21
31
42
51
61
71
81
93
101
112
121
131
141
151
161
171
183
191
201
212
222
231
242
251
261
271
281
291
301
311
321
333
342
351
363
371
381
391
402
412
421
431
442
451
461
471
481
491
501
511
521
531
541
553
563
571
583
592
601
611
623
631
641
651
661
672
682
692
701
712
722
731
741
751
762
771
781
791
801
811
821
831
841
851
861

[1,1,1,2,1,1,1,1,3,1,2,1,1,1,1,1,1,3,1,1,2,2,1,2,
 1,1,1,1,1,1,1,1,3,2,1,3,1,1,1,2,2,1,1,2,1,1,1,1,1,
 1,1,1,1,1,3,3,1,3,2,1,1,3,1,1,1,1,2,2,2,1,2,2,1,1,
 1,2,1,1,1,1,1,1,1,1,1,1]