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A287794 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
108
117
126
135
144
153
162
171
182
193
204
215
226
237
248
259
2610
279
288
297
306
315
324
333
342
353
364
375
386
397
408
419
4210
4311
4410
459
468
477
486
495
504
513
524
535
546
557
568
579
5810
5911
6012
6111
6210
639
648
657
666
675
684
695
706
717
728
739
7410
7511
7612
7713
7812
7911
8010

[0,1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2,1,2,3,4,5,6,7,
 8,9,10,9,8,7,6,5,4,3,2,3,4,5,6,7,8,9,10,11,10,9,8,
 7,6,5,4,3,4,5,6,7,8,9,10,11,12,11,10,9,8,7,6,5,4,
 5,6,7,8,9,10,11,12,13,12,11,10]