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A137998 as a simple table

na(n)
11
22
33
40
53
61
72
82
95
104
111
124
132
144
154
161
172
184
192
202
211
223
232
247
255
261
272
284
293
303
311
322
332
343
354
361
374
382
394
403
411
422
434
442
452
461
475
482
495
503
511
522
535
547
554
561
572
582
593
604
611
623
632
647
653
661
672
684
692
702
711
7212
732
743
757
761
772
783
795
807
811
822
832
843
854
861
873
882
895
903
911
922
933
942
952
961
976
982
993
1005
1011
1022
1033
1044
1053

[1,2,3,0,3,1,2,2,5,4,1,4,2,4,4,1,2,4,2,2,1,3,2,7,
 5,1,2,4,3,3,1,2,2,3,4,1,4,2,4,3,1,2,4,2,2,1,5,2,5,
 3,1,2,5,7,4,1,2,2,3,4,1,3,2,7,3,1,2,4,2,2,1,12,2,
 3,7,1,2,3,5,7,1,2,2,3,4,1,3,2,5,3,1,2,3,2,2,1,6,2,
 3,5,1,2,3,4,3]