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A174287 as a simple table

na(n)
13
23
31
411
51
61
71
81
91
101
113
127
1331
1413
159
161
171
18141
1953
2037
219
2211
231
247
2561
267
2717
2813
2917
301
3117
3211
337
3423
357
3627
3727
387
391
409
4119
4229
437
4429
4519
463
473
481
4943
5067
511
527
537
549
559
561
5713
5821
597
607
617
621
631
6443
651
661
6757
681
6967
707
7117

[3,3,1,11,1,1,1,1,1,1,3,7,31,13,9,1,1,141,53,37,9,
 11,1,7,61,7,17,13,17,1,17,11,7,23,7,27,27,7,1,9,
 19,29,7,29,19,3,3,1,43,67,1,7,7,9,9,1,13,21,7,7,7,
 1,1,43,1,1,57,1,67,7,17]