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 A155963 #6 Jun 12 2015 08:38:56 %S A155963 2,1,3,4,5,6,7,8,11,9,10,13,12,17,14,19,15,23,16,18,21,20,29,22,31,24, %T A155963 37,25,26,41,27,28,43,30,47,32,34,33,35,36,53,38,59,39,40,61,42,44,67, %U A155963 45,46,71,48,73,49,50,52,51,54,79,55,56,83,57,58,89,60,65,62,64,63,97 %N A155963 Terms of EKG sequence A064413 that are divisible by 3, divided by 3. %C A155963 This is a permutation of the natural numbers. %K A155963 nonn %O A155963 1,1 %A A155963 _Thomas Ordowski_, Jan 31 2009 %E A155963 Definition clarified by _N. J. A. Sloane_, Feb 02 2009 %E A155963 Extended by _R. J. Mathar_, Apr 04 2009