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A253630 as a simple table

na(n)
20
32
41
53
62
73
82
94
103
114
123
134
143
155
163
175
184
195
204
215
224
235
244
256
264
276
284
296
305
315
324
336
345
356
365
376
385
396
405
416
425
436
445
457
465
476
485
496
506
517
525
537
546
557
565
577
586
597
606
616
625
637
645
657
666
677
686
697
706
717
726
737
746
758
766
777
786
797
806
818
826
837
846
858
866
878
886

[0,2,1,3,2,3,2,4,3,4,3,4,3,5,3,5,4,5,4,5,4,5,4,6,
 4,6,4,6,5,5,4,6,5,6,5,6,5,6,5,6,5,6,5,7,5,6,5,6,6,
 7,5,7,6,7,5,7,6,7,6,6,5,7,5,7,6,7,6,7,6,7,6,7,6,8,
 6,7,6,7,6,8,6,7,6,8,6,8,6]