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A125720 as a simple table

na(n)
10
21
31
40
50
60
70
81
90
101
111
120
131
141
151
160
170
181
191
200
210
220
230
241
250
261
271
281
290
300
310
321
330
341
351
360
370
380
390
401
410
421
431
440
451
461
471
480
490
501
511
520
530
540
550
561
570
581
590
600
611
621
631
640

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