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A011731 as a simple table

na(n)
00
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
171
180
190
200
210
220
230
241
250
260
270
280
290
300
311
320
330
340
351
360
370
381
390
400
410
420
430
440
451
460
470
480
491
500
510
521
531
540
550
560
570
580
591
601
610
620
631
640
650
661
670
680
690
700
711
720
731
740
750
760
771
780
790
801

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