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A317187 as a simple table

na(n)
12
23
313
431
567
6107
7173
8241
9347
10443
11577
12709
13877
141049
151249
161471
171697
181973
192243
202539
212833
223191
233541
243911
254289
264729
275179
285651
296131
306637
317159
327699
338293
348867
359473
3610133
3710799
3811503
3912251
4012941
4113709
4214537
4315289

[2,3,13,31,67,107,173,241,347,443,577,709,877,
 1049,1249,1471,1697,1973,2243,2539,2833,3191,3541,
 3911,4289,4729,5179,5651,6131,6637,7159,7699,8293,
 8867,9473,10133,10799,11503,12251,12941,13709,
 14537,15289]