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A321510 as a simple table

na(n)
15
27
319
443
561
679
7109
8151
9163
10223
11271
12349
13421
14439
15523
16601
17613
18631
19673
20691
21811
22853
23919
24991
251009
261051
271063
281153
291213
301231
311279
321321
331429
341531
351549
361663
371693
381789
391801
401873
411933
421951
432113
442143
452179
462221
472239
482503
492539
502683
512791
522833
532851

[5,7,19,43,61,79,109,151,163,223,271,349,421,439,
 523,601,613,631,673,691,811,853,919,991,1009,1051,
 1063,1153,1213,1231,1279,1321,1429,1531,1549,1663,
 1693,1789,1801,1873,1933,1951,2113,2143,2179,2221,
 2239,2503,2539,2683,2791,2833,2851]