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 A022969 #11 Jul 29 2024 03:42:56 %S A022969 13,12,11,10,9,8,7,6,5,4,3,2,1,0,-1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11, %T A022969 -12,-13,-14,-15,-16,-17,-18,-19,-20,-21,-22,-23,-24,-25,-26,-27,-28, %U A022969 -29,-30,-31,-32,-33,-34,-35,-36,-37,-38,-39,-40,-41,-42,-43,-44,-45,-46,-47 %N A022969 a(n) = 13-n. %H A022969 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>. %H A022969 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %F A022969 G.f.: ( 13-14*x ) / ( (x-1)^2 ). - _R. J. Mathar_, Aug 26 2015 %t A022969 13 - Range[0, 100] (* _Paolo Xausa_, Jul 29 2024 *) %Y A022969 Cf. A022958 - A022995. %K A022969 sign,easy %O A022969 0,1 %A A022969 _N. J. A. Sloane_