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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A366171 as a simple table

na(n)
13
27
319
427
531
639
7151
8199
9451
102371
112511
127859
13103819

[3,7,19,27,31,39,151,199,451,2371,2511,7859,
 103819]