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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”).

A234285 as a simple table

na(n)
11
25
39
411
513
615
721
823
925
1027
1129
1233
1335
1437
1543
1645

[1,5,9,11,13,15,21,23,25,27,29,33,35,37,43,45]