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A101668 as a simple table

na(n)
00
11
22
30
40
50
60
71
80
91
100
111
120
131
142
150
160
171
182
190
200
211
222
230
240
251
262
270
280
290
300
311
320
331
342
350
360
370
380
391
400
411
422
430
440
450
460
471
480
491
502
510
520
530
540
551
560
571
580
591
600
611
622
630
640
651
662
670
680
690
700
711
720
731
740
751
760
771
782
790
800
811
822
830
840
850
860
871
880
891
900
911
920
931
942
950
960
971
982
990
1000
1010
1020
1031
1040

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