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A101615 as a simple table

na(n)
01
11
22
32
41
51
61
71
82
92
102
112
122
132
141
151
161
171
182
192
201
211
221
231
242
252
261
271
281
291
302
312
322
332
342
352
361
371
381
391
402
412
422
432
442
452
461
471
481
491
502

[1,1,2,2,1,1,1,1,2,2,2,2,2,2,1,1,1,1,2,2,1,1,1,1,
 2,2,1,1,1,1,2,2,2,2,2,2,1,1,1,1,2,2,2,2,2,2,1,1,1,
 1,2]