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A154421 as a simple table

na(n)
10
20
30
40
50
61
71
83
92
105
112
125
132
144
153
164
174
185
192
206
212
227
235
247
253
269
273
289
294
307
313
326
334
349
353
3610
373
388
394
406
415
428
436
448
453
469
474
488
496
508

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