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A319988 as a simple table

na(n)
10
20
30
41
50
60
70
81
91
100
110
120
130
140
150
161
170
181
190
200
210
220
230
240
251
260
271
280
290
300
310
321
330
340
350
361
370
380
390
400
410
420
430
440
450
460
470
480
491
501
510
520
530
541
550
560
570
580
590
600
610
620
630
641
650
660
670
680
690
700
710
721
730
740
751
760
770
780
790
800
811
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
981
990
1001
1010
1020
1030
1040
1050
1060
1070
1081
1090
1100
1110
1120
1130
1140
1150
1160
1170
1180
1190
1200
1211

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