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A270278 as a simple table

na(n)
01
15
25
333
413
593
633
7161
853
9285
1073
11417
12101
13573
14161
15713
16221
17957
18249
191217
20277
211501
22337
231769
24421
252093
26481
272425
28581
292733
30753
312977
32929
333453
34985
353969
361013
374509
381073
395033
401157
415613
421217
436201
441317
456765
461489
477265
481677

[1,5,5,33,13,93,33,161,53,285,73,417,101,573,161,
 713,221,957,249,1217,277,1501,337,1769,421,2093,
 481,2425,581,2733,753,2977,929,3453,985,3969,1013,
 4509,1073,5033,1157,5613,1217,6201,1317,6765,1489,
 7265,1677]