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 A022996 #16 Jul 28 2024 16:50:04 %S A022996 40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18, %T A022996 17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0,-1,-2,-3,-4,-5,-6,-7,-8, %U A022996 -9,-10,-11,-12,-13,-14,-15,-16,-17,-18,-19,-20 %N A022996 a(n) = 40-n. %H A022996 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>. %H A022996 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %t A022996 40 - Range[0, 100] (* _Paolo Xausa_, Jul 28 2024 *) %o A022996 (PARI) a(n)=40-n \\ _Charles R Greathouse IV_, Jul 10 2016 %Y A022996 Cf. A022958 - A022995. %K A022996 sign,easy %O A022996 0,1 %A A022996 _N. J. A. Sloane_