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 A109715 #10 Aug 09 2025 07:43:18 %S A109715 5,7,71,322,431,761,1319,1414,2773,3173,8978,10933,11351,14335,15483, %T A109715 21249,26564,27587,41711,46978,48629,49111,50098,67595,68416,74429, %U A109715 80281,82159,86146,88773,99084,110551,116099,127709,138239,150014,170099,172600,172926,199090 %N A109715 Numbers k such that A109631(k) - A109631(k+1) = A109631(k+2). %Y A109715 Cf. A109631, A109651. %K A109715 nonn,base %O A109715 1,1 %A A109715 _Jason Earls_, Aug 08 2005 %E A109715 More terms from _Jinyuan Wang_, Aug 09 2025