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A145991 as a simple table

na(n)
117
241
3101
4113
5197
6233
7281
8317
9353
10409
11461
12521
13617
14677
15709
16773
17809
18857
19881
20941
211013
221097
231117
241217
251249
261301
271381
281433
291493
301553
311601
321613
331657
341697
351721
361741
371801
381877
391901
401949
411997
422081
432129
442141
452161
462237

[17,41,101,113,197,233,281,317,353,409,461,521,
 617,677,709,773,809,857,881,941,1013,1097,1117,
 1217,1249,1301,1381,1433,1493,1553,1601,1613,1657,
 1697,1721,1741,1801,1877,1901,1949,1997,2081,2129,
 2141,2161,2237]