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A097470 as a simple table

na(n)
20
30
40
50
60
70
80
90
101
111
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
321
330
340
350
360
371
381
391
401
411
420
430
440
450
461
470
480
490
500
510
521
530
540
550
560
570
580
590
600
610
620
631
641
651
660
670
680
690
700
711
720
730
740
750
760
770
780
790
800
811
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
1000
1010
1020
1030
1040
1052
1061

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