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A307247 as a simple table

na(n)
10
20
30
41
51
61
72
80
90
100
111
121
131
142
150
160
170
180
190
200
211
221
231
242
250
260
270
281
291
301
312
320
330
340
350
360
370
381
391
401
412
420
430
440
451
461
471
482
490
500
510
521
531
541
552
560
570
580
590
600
610
621
631
641
652
660
670
680
691
701
711
722
730
740
750
760
770
780
791
801
811
822
830
840
850
861

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