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A270539 as a simple table

na(n)
12
23
35
417
537
6101
7257
8401
9577
101297
111601
122917
134357
148101
158837
1612101
1713457
1814401
1922501
2025601
2128901
2230977
2332401
2433857
2541617
2652901
2755697
2857601
2962501
3065537
3169697
3272901
3380657
3490001
3593637
36115601
37147457
38160001
39193601
40217157
41220901

[2,3,5,17,37,101,257,401,577,1297,1601,2917,4357,
 8101,8837,12101,13457,14401,22501,25601,28901,
 30977,32401,33857,41617,52901,55697,57601,62501,
 65537,69697,72901,80657,90001,93637,115601,147457,
 160001,193601,217157,220901]