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 A022972 #13 Jul 29 2024 03:46:22
%S A022972 16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0,-1,-2,-3,-4,-5,-6,-7,-8,-9,
%T A022972 -10,-11,-12,-13,-14,-15,-16,-17,-18,-19,-20,-21,-22,-23,-24,-25,-26,
%U A022972 -27,-28,-29,-30,-31,-32,-33,-34,-35,-36,-37,-38,-39,-40,-41,-42,-43,-44
%N A022972 a(n) = 16-n.
%H A022972 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>.
%H A022972 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2, -1).
%t A022972 16-Range[0,60] (* or *) LinearRecurrence[{2,-1},{16,15},70] (* _Harvey P. Dale_, Jul 26 2018 *)
%Y A022972 Cf. A022958 - A022995.
%K A022972 sign
%O A022972 0,1
%A A022972 _N. J. A. Sloane_