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 A219552 #6 Nov 23 2012 18:14:25 %S A219552 6,1,3,5,5,11,12,2,12,18,56,33,2,20,3,1,28,66,26,7,10,20,3,30,105,20, %T A219552 5,5,7,28,15,39,26,29,41,1,6,2,31,13,5,19,45,2,15,11,5,1,71,9,35,20, %U A219552 13,2,36,1,15,12,17,20,14,45,4,27,12,38,30,3,25,7,24 %N A219552 First differences of A219303. %C A219552 Conjecture: 1 appears infinitely often in this sequence (indicating an infinite number of pairs of consecutive integers in the parent sequence). %C A219552 Observation: Values tend to average around 20 for early terms, though some evidence suggests this average falls slightly much later. It is not clear how the overall average value behaves approaching the limit at infinity. %H A219552 Carl R. White, <a href="/A219552/b219552.txt">Table of n, a(n) for n = 1..10000</a> %Y A219552 Cf. A219303, A219553. %K A219552 nonn %O A219552 1,1 %A A219552 _Carl R. White_, Nov 22 2012