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A297241 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
161
172
183
194
205
216
227
238
249
2510
2611
2712
280
290
300
311
322
333
344
355
366
377
388
399
4010
4111
420
430
440
450
461
472
483
494
505
516
527
538
549
5510
560
570
580
590
600
611
622
633
644
655
666
677
688
699
700
710
720
730
740
750
761
772
783
794
805
816
827
838
840

[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,3,4,5,6,7,8,9,
 10,11,12,0,0,0,1,2,3,4,5,6,7,8,9,10,11,0,0,0,0,1,
 2,3,4,5,6,7,8,9,10,0,0,0,0,0,1,2,3,4,5,6,7,8,9,0,
 0,0,0,0,0,1,2,3,4,5,6,7,8,0]