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 A327452 #3 Sep 24 2019 22:42:50 %S A327452 1,2,-1,3,5,-6,4,-2,6,-3,8,-10,7,12,-13,9,-11,10,-5,11,-12,13,-9,14, %T A327452 -15,16,-14,15,-4,-8,18,-16,17,-18,19,22,-33,20,-23,21,-20,23,-17,24, %U A327452 -22,25,-26,29,-27,30,-29,27,-21,28,-25,26,-31,32,-28,31,-32,33,-35,36,-30,34 %N A327452 First differences of A327743. %Y A327452 Cf. A327743. %K A327452 sign %O A327452 1,2 %A A327452 _N. J. A. Sloane_, Sep 24 2019