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 A157334 #2 Mar 30 2012 18:52:03 %S A157334 1,2,1,5,1,2,1,6,1,2,1,5,1,2,1,15,1,2,1,5,1,2,1,6,1,2,1,5,1,2,1,19,1, %T A157334 2,1,5,1,2,1,6,1,2,1,5,1,2,1,15,1,2,1,5,1,2,1,6,1,2,1,5,1,2,1,43,1,2, %U A157334 1,5,1,2,1,6,1,2,1,5,1,2,1,15,1,2,1,5,1,2,1,6,1,2,1,5,1,2,1,19 %N A157334 First differences of A156799. %C A157334 For 1,2,1 see A131534. First of a family of four: second is 3,1,1,4,3,1,1,2,3=A157076, third is 9,10,9,14,4,1,10 (from 3's in A090822), fourth is 220,221,220,224, (from A157107). Many consequences. %K A157334 nonn %O A157334 0,2 %A A157334 _Paul Curtz_, Feb 27 2009