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A319581 as a simple table

na(n)
10
20
30
40
51
60
70
80
90
100
110
121
131
140
150
160
170
180
190
200
210
220
231
240
251
260
271
280
290
300
311
320
330
341
350
360
370
381
390
400
411
421
430
440
450
460
470
480
490
500
510
520
530
540
550
560
571
581
591
600
612
620
630
640
651
660
670
680
690
700
710
720
730
740
750
760
770
780
790
801
810
820
830
841
851
860
870
881
890
900

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