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A071490 as a simple table

na(n)
11
20
32
41
53
60
71
83
94
100
112
123
134
142
151
163
172
180
193
204
211
223
234
246
252
260
271
282
295
303
311
326
337
348
351
363
374
381
396
400
417
423
434
447
452
461
476
485
491
503
514
525
538
540
556
565
571
586
595
608
613
629
631
647
654
666
677
683
692
708
714
723
739
747
7510
765
7711
780
799
806
8112
825
836
848
859
866

[1,0,2,1,3,0,1,3,4,0,2,3,4,2,1,3,2,0,3,4,1,3,4,6,
 2,0,1,2,5,3,1,6,7,8,1,3,4,1,6,0,7,3,4,7,2,1,6,5,1,
 3,4,5,8,0,6,5,1,6,5,8,3,9,1,7,4,6,7,3,2,8,4,3,9,7,
 10,5,11,0,9,6,12,5,6,8,9,6]