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A273835 as a simple table

na(n)
01
15
25
317
49
529
617
761
821
965
1057
11125
1277
13161
14197
15277
16217
17285
18301
19341
20353
21469
22405
23633
24577
25605
26629
27709
28685
29745
30837
311061
32961
33981
341049
351137
361177
371285
381201
391613
401497
411505
421641
431773
441665
451793
462037
472497
482269
492357
502397

[1,5,5,17,9,29,17,61,21,65,57,125,77,161,197,277,
 217,285,301,341,353,469,405,633,577,605,629,709,
 685,745,837,1061,961,981,1049,1137,1177,1285,1201,
 1613,1497,1505,1641,1773,1665,1793,2037,2497,2269,
 2357,2397]