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A286998 as a simple table

na(n)
10
21
30
42
50
61
70
81
90
102
110
121
130
140
151
160
172
180
191
200
212
220
231
240
250
261
270
282
290
301
310
321
330
342
350
361
370
380
391
400
412
420
431
440
451
460
472
480
491
500
510
521
530
542
550
561
570
582
590
601
610
620
631
640
652
660
671
680
691
700
712
720
731
740
750
761
770
782
790
801
810
820
831
840
852
860

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