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A218254 as a simple table

na(n)
00
11
20
32
41
50
63
71
80
94
103
111
120
135
143
151
160
176
184
193
201
210
227
234
243
251
260
278
287
294
303
311
320
339
347
354
363
371
380
3910
408
417
424
433
441
450
4611
478
487
494
503
511
520
5312
5410
558
567
574
583
591
600
6113
6210
638
647
654
663
671
680
6914
7011
718
727
734
743
751
760
7715
7811
798
807
814
823
831
840

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