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 A117247 #6 Mar 07 2015 05:57:41 %S A117247 4,6,8,12,14,15,17,18,21,23,26,27,29,30,31,34,35,37,39,41,42,45,46,47, %T A117247 50,51,52,54,56,57,59,60,62,64,65,66,69,70,71,72,74,76,77,78,80,81,83, %U A117247 84,86,87,88,90,92,93,94,95,98,99,100,101,102,105,106,107,108,109,111,113,114 %N A117247 Numbers missing from A079051. %D A117247 N. J. A. Sloane and Allan Wilks, On sequences of Recaman type, paper in preparation, 2006. %Y A117247 Cf. A079051. %K A117247 nonn %O A117247 1,1 %A A117247 _N. J. A. Sloane_, Apr 29 2006