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A263998 as a simple table

na(n)
11
21
33
43
53
63
74
81
94
104
113
127
132
144
155
162
173
184
197
203
217
225
234
245
255
263
275
288
293
308
313
324
336
345
354
365
3710
382
3911
404
412
426
433
446
453
467
475
485
493
503
516
525
536
548
557
563
579
585
594
609
615
624
634
648
654
665
678
682
6911
705
715
729
735
746
758
766
775
7810
798
803
814
8213
834
8410
857
864
8712
886
897
904
9110
926
937
946
954
969
975
985
998
10011

[1,1,3,3,3,3,4,1,4,4,3,7,2,4,5,2,3,4,7,3,7,5,4,5,
 5,3,5,8,3,8,3,4,6,5,4,5,10,2,11,4,2,6,3,6,3,7,5,5,
 3,3,6,5,6,8,7,3,9,5,4,9,5,4,4,8,4,5,8,2,11,5,5,9,
 5,6,8,6,5,10,8,3,4,13,4,10,7,4,12,6,7,4,10,6,7,6,
 4,9,5,5,8,11]