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 A023482 #14 Jul 08 2025 17:19:41 %S A023482 -40,-39,-38,-37,-36,-35,-34,-33,-32,-31,-30,-29,-28,-27,-26,-25,-24, %T A023482 -23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6, %U A023482 -5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 %N A023482 n-40. %H A023482 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A023482 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %F A023482 a(n) = 2 a(n-1) - a(n-2). a(n) = -A022996(n). G.f.: (-40 + 41*x)/(1 - x)^2. - _M. F. Hasler_, Apr 18 2015 %t A023482 Range[0,60]-37 (* _M. F. Hasler_, Apr 19 2015 *) %o A023482 (PARI) a(n)=n-40 \\ _M. F. Hasler_, Apr 18 2015 %Y A023482 Cf. A256958, A001057, A000027, A001477, A000027, A023443, ..., A023481, A022958, ..., A022996, A256958. %K A023482 sign,easy %O A023482 0,1 %A A023482 _N. J. A. Sloane_