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A278521 as a simple table

na(n)
00
12
22
30
42
53
60
70
81
90
102
111
120
131
142
150
160
170
180
192
201
210
221
232
240
250
260
270
281
291
300
312
321
330
340
350
360
371
382
391
402
413
422
431
440
452
461
470
481
491
500
510
521
530
541
551
560
570
581
590
600
611
620
632
641
650
661
673
682
692
702
712
722
730
741
752
762
772
782
792
800
810
822
833
841
852
863
872
881
890
901
912
920
930
940
950
960
971
980
991
1000
1010
1020
1030
1040
1052
1062
1070
1080
1090
1100
1110
1120
1130
1141
1151
1160
1170
1182
1190
1200

[0,2,2,0,2,3,0,0,1,0,2,1,0,1,2,0,0,0,0,2,1,0,1,2,
 0,0,0,0,1,1,0,2,1,0,0,0,0,1,2,1,2,3,2,1,0,2,1,0,1,
 1,0,0,1,0,1,1,0,0,1,0,0,1,0,2,1,0,1,3,2,2,2,2,2,0,
 1,2,2,2,2,2,0,0,2,3,1,2,3,2,1,0,1,2,0,0,0,0,0,1,0,
 1,0,0,0,0,0,2,2,0,0,0,0,0,0,0,1,1,0,0,2,0,0]