login

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”).

A177661 as a simple table

na(n)
11
270
334302
460601152
5281381782044
62841788674410678
754998505166544652117

[1,70,34302,60601152,281381782044,
 2841788674410678,54998505166544652117]