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A189668 as a simple table

na(n)
10
21
30
41
50
60
70
81
90
101
110
120
130
141
150
160
171
180
190
201
210
221
230
240
250
261
270
281
290
300
310
321
330
340
351
360
370
381
390
401
410
420
430
441
450
460
471
480
491
500
510
520
531
540
550
561
570
581
590
600
610
621
630
641
650
660
670
681
690
700
711
720
730
741
750
761
770
780
790
801
810
821
830
840
850
861
870
880
891
900
910
921
930
941
950
960
970
981
990
1000
1011
1020
1031
1040
1050
1060
1071
1080
1090
1101
1110
1121
1130
1140
1150
1161
1170
1181
1190
1200
1210
1221

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