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A004641 as a simple table

na(n)
11
20
30
41
50
61
70
81
90
100
111
120
131
140
150
161
170
181
190
200
211
220
231
240
251
260
270
281
290
301
310
320
331
340
351
360
371
380
390
401
410
421
430
440
451
460
471
480
491
500
510
521
530
541
550
560
571
580
591
600
610
621
630
641
650
661
670
680
691
700
711
720
730
741
750
761
770
781
790
800
811
820
831
840
850
861
870
881
890
900
911
920
931

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