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 A022990 #13 Jul 29 2024 08:18:20 %S A022990 34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12, %T A022990 11,10,9,8,7,6,5,4,3,2,1,0,-1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13, %U A022990 -14,-15,-16,-17,-18,-19,-20,-21,-22,-23,-24,-25,-26 %N A022990 a(n) = 34-n. %H A022990 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>. %H A022990 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %t A022990 34-Range[0,60] (* _Harvey P. Dale_, Mar 11 2015 *) %Y A022990 Cf. A022958 - A022995. %K A022990 sign,easy %O A022990 0,1 %A A022990 _N. J. A. Sloane_