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 A022968 #15 Jul 29 2024 03:04:15 %S A022968 12,11,10,9,8,7,6,5,4,3,2,1,0,-1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12, %T A022968 -13,-14,-15,-16,-17,-18,-19,-20,-21,-22,-23,-24,-25,-26,-27,-28,-29, %U A022968 -30,-31,-32,-33,-34,-35,-36,-37,-38,-39,-40,-41,-42,-43,-44,-45,-46,-47,-48 %N A022968 a(n) = 12-n. %H A022968 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>. %H A022968 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %F A022968 G.f.: ( 12-13*x ) / ( (x-1)^2 ). - _R. J. Mathar_, Aug 26 2015 %F A022968 a(n) = 2*a(n-1)-a(n-2). - _Wesley Ivan Hurt_, Aug 17 2021 %t A022968 12-Range[0,70] (* _Harvey P. Dale_, May 19 2019 *) %Y A022968 Cf. A022958 - A022995. %K A022968 sign,easy %O A022968 0,1 %A A022968 _N. J. A. Sloane_