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A215169 as a simple table

na(n)
12
25
319
453
573
6107
7223
8257
9277
10311
11359
12379
13461
14563
15617
16631
17719
18733
19787
20821
21937
22971
23991
241039
251093
261229
271277
281297
291399
301433
311447
321481
331549
341583
351637
361753
371787
381889
392011
402113
412161
422297
432351
442399
452467
462521
472657
482671

[2,5,19,53,73,107,223,257,277,311,359,379,461,563,
 617,631,719,733,787,821,937,971,991,1039,1093,
 1229,1277,1297,1399,1433,1447,1481,1549,1583,1637,
 1753,1787,1889,2011,2113,2161,2297,2351,2399,2467,
 2521,2657,2671]