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A051840 as a simple table

na(n)
00
10
21
30
41
50
61
70
81
90
101
110
120
131
140
151
160
170
181
190
200
211
220
230
241
250
260
271
280
291
300
310
321
330
341
350
361
370
380
391
400
410
421
430
440
450
460
471
480
491
500
510
521
530
541
550
560
570
581
590
600
611
620
630
640
650
661
670
680
691
700
710
721
730
740
751
760
771
780
791
800
811
820
831
840
851
860
871
880
890
900
910
921
930
940
951
960
971
980
990
1001
1010
1020
1030

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