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A280940 as a simple table

na(n)
11
21
31
41
51
61
71
82
91
101
111
121
131
141
151
161
171
181
192
201
211
221
231
241
252
261
271
281
291
303
311
321
332
341
351
361
371
381
391
401
411
422
431
441
451
461
471
481
491
501
511
522
531
541
554
561
571
581
591
601
611
621

[1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,
 2,1,1,1,1,3,1,1,2,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,
 1,1,2,1,1,4,1,1,1,1,1,1,1]