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A240233 as a simple table

na(n)
15
25
35
45
57
67
75
85
95
107
115
127
1311
145
1511
165
177
1823
1913
2011
215
225
2341
245
257
2637
2729
2811
295
3013
317
325
3313
3423
3513
367
375
385
3923
4011
4111
425
435
4413
457
465
4729
4823
4913
507
515
5219
5341
5413
5517
5611
577
585
5919
607
617
627
635
645
657
665
677
6811
6929
7013
715
7217
735
7419
757
767
775

[5,5,5,5,7,7,5,5,5,7,5,7,11,5,11,5,7,23,13,11,5,5,
 41,5,7,37,29,11,5,13,7,5,13,23,13,7,5,5,23,11,11,
 5,5,13,7,5,29,23,13,7,5,19,41,13,17,11,7,5,19,7,7,
 7,5,5,7,5,7,11,29,13,5,17,5,19,7,7,5]