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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”).

A125759 as a simple table

na(n)
11
26
334
4448
513384
6684236
752267569

[1,6,34,448,13384,684236,52267569]