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A154263 as a simple table

na(n)
10
20
30
40
51
61
72
81
93
101
112
122
132
144
152
165
173
182
193
204
213
224
232
243
254
265
273
284
292
302
313
327
336
345
356
363
374
385
394
409
414
426
436
443
457
467
475
485
494
505

[0,0,0,0,1,1,2,1,3,1,2,2,2,4,2,5,3,2,3,4,3,4,2,3,
 4,5,3,4,2,2,3,7,6,5,6,3,4,5,4,9,4,6,6,3,7,7,5,5,4,
 5]