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A130831 as a simple table

na(n)
11
22
31
42
52
64
71
82
92
104
112
124
134
148
152
164
174
188
194
208
218
2216
231
242
252
264
272
284
294
308
312
324
334
348
354
368
378
3816
392
404
414
428
434
448
458
4616
474
488
498
5016
518
5216
5316
5432
552
564
574
588
594
608
618
6216
634
648
658
6616
678
6816
6916
7032
714
728
738
7416
758
7616
7716
7832
798
8016
8116
8232
8316
8432
8532
8664
872
884
894
908
914
928
938
9416

[1,2,1,2,2,4,1,2,2,4,2,4,4,8,2,4,4,8,4,8,8,16,1,2,
 2,4,2,4,4,8,2,4,4,8,4,8,8,16,2,4,4,8,4,8,8,16,4,8,
 8,16,8,16,16,32,2,4,4,8,4,8,8,16,4,8,8,16,8,16,16,
 32,4,8,8,16,8,16,16,32,8,16,16,32,16,32,32,64,2,4,
 4,8,4,8,8,16]