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 A036273 #8 Jul 08 2025 21:43:40 %S A036273 1,2,0,0,0,0,2,2,2,2,0,0,2,2,4,2,2,2,0,2,0,2,0,2,0,0,8,8,8,6,2,4,4,0, %T A036273 2,2,2,2,0,4,6,6,8,2,2,2,6,0,2,2,0,0,4,4,4,2,2,6,2,2,2,8,8,6,2,0,2,6, %U A036273 0,0,2,0,2,0,2,2,2,4,6,0,4,2,2,0,2,0,2,6,2,4,0,0,2 %N A036273 Absolute values of differences of A036272. %t A036273 Nest[Abs[Differences[#]]&,Prime[Range[100]],4] (* _Harvey P. Dale_, Jan 05 2012 *) %Y A036273 Cf. A036262, A036263. %K A036273 nonn %O A036273 0,2 %A A036273 _N. J. A. Sloane_