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A286297 as a simple table

na(n)
00
11
22
33
42
50
64
71
85
93
101
115
126
130
144
152
164
175
180
192
201
217
223
236
248
255
263
271
284
296
308
319
322
337
340
3510
366
374
382
390
403
419
425
4310
4411
451
4612
477
4813
497
508
519
525
534
546
5510
563
572
5812
590
6011
6114
6215
631
648
656
6610
673
687
692
7011
714
729
7313
741
755
7615
7712
7816
7914
8017

[0,1,2,3,2,0,4,1,5,3,1,5,6,0,4,2,4,5,0,2,1,7,3,6,
 8,5,3,1,4,6,8,9,2,7,0,10,6,4,2,0,3,9,5,10,11,1,12,
 7,13,7,8,9,5,4,6,10,3,2,12,0,11,14,15,1,8,6,10,3,
 7,2,11,4,9,13,1,5,15,12,16,14,17]