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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”).

A309257 as a simple table

na(n)
11
23
318
480
575
63087
7196
81440
9405
106325
11726
127488
131183
1411025
151800

[1,3,18,80,75,3087,196,1440,405,6325,726,7488,
 1183,11025,1800]