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A273762 as a simple table

na(n)
01
15
29
317
421
529
637
769
889
985
1089
11153
12201
13197
14225
15293
16321
17301
18293
19389
20425
21341
22381
23497
24505
25497
26541
27717
28785
29745
30813
31989
321065
33969
34993
351201
361225
371077
381077
391109
401249
411273
421285
431437
441537
451577
461669
471829
481957
491849
501953

[1,5,9,17,21,29,37,69,89,85,89,153,201,197,225,
 293,321,301,293,389,425,341,381,497,505,497,541,
 717,785,745,813,989,1065,969,993,1201,1225,1077,
 1077,1109,1249,1273,1285,1437,1537,1577,1669,1829,
 1957,1849,1953]