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A146949 as a simple table

na(n)
15
27
317
419
573
6103
7263
8307
9653
10673
11743
12823
13839
141109
151327
162647
174391
184621
194967
206389
216661
226829
236871
2412227
2512269
2618839
2719861
2820663
2923497
3023593
3123833
3224499
3325411
3428771
3529717
3636599
3740949
3841617
3946889
4047353
4149033
4250093
4350587
4450599
4551511

[5,7,17,19,73,103,263,307,653,673,743,823,839,
 1109,1327,2647,4391,4621,4967,6389,6661,6829,6871,
 12227,12269,18839,19861,20663,23497,23593,23833,
 24499,25411,28771,29717,36599,40949,41617,46889,
 47353,49033,50093,50587,50599,51511]