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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”).

A328138 as a simple table

na(n)
11
217
3803
41241
520264753
628214180783393
7228454543831049

[1,17,803,1241,20264753,28214180783393,
 228454543831049]