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 A115418 #3 Mar 15 2014 09:22:27 %S A115418 2,32,473,9641 %N A115418 Define a k-th-power loop of length m>1 to be a circular permutation of the numbers 1 to m such that the sum of any two consecutive numbers is a perfect k-th-power; these numbers are the lengths of the possible k-th-power loops. %Y A115418 Cf. A071984, A112663. %K A115418 nonn %O A115418 1,1 %A A115418 _Roberto Tauraso_, Jan 22 2006