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 A127306 #2 Mar 31 2012 13:21:14 %S A127306 0,1,5,6,12,16,18,20,49,57,287,291,349,353,5791 %N A127306 Fixed points of permutation A126313/A126314. %C A127306 Those i, for which A126313(i)=i. Cf. A126312, A127278. %K A127306 nonn,more %O A127306 0,3 %A A127306 _Antti Karttunen_, Jan 16 2007