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A101808 as a simple table

na(n)
01
12
21
31
40
51
61
70
81
91
100
111
120
130
141
151
160
170
181
190
201
211
220
231
240
250
261
270
280
291
301
310
320
331
340
351
361
370
380
391
400
411
420
430
441
450
460
470
481
490
501
511
520
531
541
550
561
570
580
590
600
610
620
631
640
651
660
670
681
691
700
710
720
730
741
751
760
770
781
790
800
811
820
831
840
850
861
870
880
891
901
910
920
930
940
951
961
970
981
991
1000
1010
1020
1030
1040

[1,2,1,1,0,1,1,0,1,1,0,1,0,0,1,1,0,0,1,0,1,1,0,1,
 0,0,1,0,0,1,1,0,0,1,0,1,1,0,0,1,0,1,0,0,1,0,0,0,1,
 0,1,1,0,1,1,0,1,0,0,0,0,0,0,1,0,1,0,0,1,1,0,0,0,0,
 1,1,0,0,1,0,0,1,0,1,0,0,1,0,0,1,1,0,0,0,0,1,1,0,1,
 1,0,0,0,0,0]