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A217561 as a simple table

na(n)
17
237
353
489
5113
6127
7211
8293
9307
10449
11541
12577
13587
14593
15683
16691
17719
18797
19839
20929
21937
221259
231297
241399
251471
261499
271567
281709
291777
301801
311811
321847
331973
341979
352039
362221
372467
382503
392579
402633
412647
422819
432939
443037
453061
463109
473187
483271

[7,37,53,89,113,127,211,293,307,449,541,577,587,
 593,683,691,719,797,839,929,937,1259,1297,1399,
 1471,1499,1567,1709,1777,1801,1811,1847,1973,1979,
 2039,2221,2467,2503,2579,2633,2647,2819,2939,3037,
 3061,3109,3187,3271]