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A066490 as a simple table

na(n)
10
20
31
41
51
61
72
82
92
102
113
123
133
143
153
163
173
183
194
204
214
224
235
245
255
265
275
285
295
305
316
326
336
346
356
366
376
386
396
406
416
426
437
447
457
467
478
488
498
508
518
528
538
548
558
568
578
588
599
609
619
629
639
649
659
669
6710
6810
6910
7010
7111
7211
7311
7411
7511
7611
7711
7811
7912
8012
8112
8212
8313
8413
8513
8613
8713
8813
8913
9013
9113

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