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A316975 as a simple table

na(n)
11
22
31
41
51
62
72
81
91
102
113
121
133
144
151
161
174
182
195
201
212
226
236
241
252
266
272
282
297
302
318
321
333
348
352
361
379
3810
393
401
4110
424
4311
443
451
4612
4712
481
498
504
514
523
5313
544
553
562
575
5814
5915
601
6115
6216
632
641
653
666
6717
684
696
704
7118
721
7318
7418
752
765
776
786
7920
801
814
8220

[1,2,1,1,1,2,2,1,1,2,3,1,3,4,1,1,4,2,5,1,2,6,6,1,
 2,6,2,2,7,2,8,1,3,8,2,1,9,10,3,1,10,4,11,3,1,12,
 12,1,8,4,4,3,13,4,3,2,5,14,15,1,15,16,2,1,3,6,17,
 4,6,4,18,1,18,18,2,5,6,6,20,1,4,20]