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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”).

A323648 as a simple table

na(n)
11
22
33
45
57
69
711
815
917
1019
1123
1227
1329
1431
1535
1639

[1,2,3,5,7,9,11,15,17,19,23,27,29,31,35,39]