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A308470 as a simple table

na(n)
10
20
30
40
50
60
71
80
90
100
110
120
131
141
150
160
170
180
191
200
210
222
230
240
250
261
270
281
290
300
311
320
332
340
351
360
371
381
390
400
410
420
431
440
450
460
470
480
491
500
510
521
530
540
550
561
570
580
590
600
611
627
630
640
651
660
671
680
690
701
710
720
731
741
750
764
777
780
791
800
810
822
830
840
850
861
873
882
890
900
911
920
932
940
954

[0,0,0,0,0,0,1,0,0,0,0,0,1,1,0,0,0,0,1,0,0,2,0,0,
 0,1,0,1,0,0,1,0,2,0,1,0,1,1,0,0,0,0,1,0,0,0,0,0,1,
 0,0,1,0,0,0,1,0,0,0,0,1,7,0,0,1,0,1,0,0,1,0,0,1,1,
 0,4,7,0,1,0,0,2,0,0,0,1,3,2,0,0,1,0,2,0,4]