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A020987 as a simple table

na(n)
00
10
20
31
40
50
61
70
80
90
100
111
121
131
140
151
160
170
180
191
200
210
221
230
241
251
261
270
280
290
301
310
320
330
340
351
360
370
381
390
400
410
420
431
441
451
460
471
481
491
501
510
521
531
540
551
560
570
580
591
601
611
620
631
640
650
660
671
680
690
701
710
720
730
740
751
761
771
780
791
800

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