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A281158 as a simple table

na(n)
12
23
35
43
53
65
75
83
95
103
115
125
133
143
1511
167
175
1811
193
207
2111
225
233
245
253
265
275
283
2913
307
315
325
335
345
3511
367
375
3813
395
403
417
4217
433
443
457
465
4717
485
493
507
5111
527
533
5413
5513
565
575
583
595
6017
615
627
635
643
653
6631
677
683
6929
7023
715
7217
7311
7419
7511
7617
775
7823
795
803
817
825
835
845
857
8617

[2,3,5,3,3,5,5,3,5,3,5,5,3,3,11,7,5,11,3,7,11,5,3,
 5,3,5,5,3,13,7,5,5,5,5,11,7,5,13,5,3,7,17,3,3,7,5,
 17,5,3,7,11,7,3,13,13,5,5,3,5,17,5,7,5,3,3,31,7,3,
 29,23,5,17,11,19,11,17,5,23,5,3,7,5,5,5,7,17]