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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”).

A355243 as a simple table

na(n)
25
311
425
555
6125
7277
8637
91421
103237
117553
1216807
1338661
1490209
15208397

[5,11,25,55,125,277,637,1421,3237,7553,16807,
 38661,90209,208397]