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A255480 as a simple table

na(n)
31
42
53
64
73
82
93
105
112
125
137
143
157
162
173
184
193
204
2111
222
2311
2413
252
2613
274
283
292
305
3117
325
3317
345
353
362
376
3819
394
4019
412
423
4323
443
4523
462
473
482
492
504
5129
527
5329
547
553
567
572
5811
5931
605
6131
625
633
642
652
664
6737
684
6937
703
713
725
733
744
759
762
776
7841
792
8041
8143
823
8343
848
853
864
8717

[1,2,3,4,3,2,3,5,2,5,7,3,7,2,3,4,3,4,11,2,11,13,2,
 13,4,3,2,5,17,5,17,5,3,2,6,19,4,19,2,3,23,3,23,2,
 3,2,2,4,29,7,29,7,3,7,2,11,31,5,31,5,3,2,2,4,37,4,
 37,3,3,5,3,4,9,2,6,41,2,41,43,3,43,8,3,4,17]