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A393531 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
111
122
131
141
151
162
171
180
191
200
210
222
230
240
251
260
270
281
290
300
311
321
332
341
350
360
370
380
390
400
417
421
430
441
451
462
472
480
493
500
511
521
530
540
550
560
572
580
590
600
611
620
630
641
650
660
670
681
691
701
711
720
730
742
751
760
770
781
790
800
810
821
832
840
850
860
871
881
891
900
910
921
931
940
950
961
971
980
990
1000
1010
1020
1030
1040
1051

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