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A337690 as a simple table

na(n)
10
20
30
40
50
61
70
80
90
100
110
121
130
140
150
160
170
181
190
201
210
220
230
241
250
260
270
281
290
301
310
320
330
340
350
361
370
380
390
401
410
421
430
440
450
460
470
481
490
500
510
520
530
541
550
561
570
580
590
602
610
620
630
640
650
661
670
680
690
701
710
721
730
740
750
760
770
781
790
801
810
820
830
842
850
860
870
881
890
901
910
920
930
940
950
961
970
980
990
1001
1010
1021
1030
1041
1050
1060
1070
1081
1090
1100
1110
1121
1130
1141
1150
1160
1170
1180
1190
1202

[0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,1,0,0,0,1,
 0,0,0,1,0,1,0,0,0,0,0,1,0,0,0,1,0,1,0,0,0,0,0,1,0,
 0,0,0,0,1,0,1,0,0,0,2,0,0,0,0,0,1,0,0,0,1,0,1,0,0,
 0,0,0,1,0,1,0,0,0,2,0,0,0,1,0,1,0,0,0,0,0,1,0,0,0,
 1,0,1,0,1,0,0,0,1,0,0,0,1,0,1,0,0,0,0,0,2]