This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A051761 #15 Mar 08 2024 16:48:35 %S A051761 0,1,4,8,9,25,27,32,121,128,144,729,841,5041,5184,45369,46225,363609, %T A051761 403225,3674889,1401602635449 %N A051761 Numbers that are simultaneously a sum of factorials of distinct integers and of the form a^b with b >= 2. %C A051761 0! and 1! are treated as distinct. %e A051761 4 is in the sequence since 2! + 1! + 0! = 4 = 2^2. %Y A051761 Cf. A025494, A051760, A059589. %K A051761 nonn,more %O A051761 1,3 %A A051761 Paul.Jobling(AT)WhiteCross.com, Aug 10 2000