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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”).

A265422 as a simple table

na(n)
11
248
3225
48708
579026
62108980
728314236
8639018151
910652923659
10224611274898
114205037878532
1286943916408794
131731464344049192
1435851466896552009

[1,48,225,8708,79026,2108980,28314236,639018151,
 10652923659,224611274898,4205037878532,
 86943916408794,1731464344049192,35851466896552009]