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 A023479 #10 Jul 08 2025 17:19:25 %S A023479 -37,-36,-35,-34,-33,-32,-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21, %T A023479 -20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2, %U A023479 -1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23 %N A023479 n-37. %H A023479 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A023479 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %F A023479 a(n) = 2 a(n-1) - a(n-2). a(n) = -A022993(n) = A256958(n-37). G.f.: (-37 + 38*x)/(1 - x)^2. - _M. F. Hasler_, Apr 18 2015 %p A023479 A023479 := n -> n-37; # _M. F. Hasler_, Apr 18 2015 %t A023479 Range[0,60]-37 (* _M. F. Hasler_, Apr 18 2015 *) %o A023479 (PARI) a(n)=n-37 \\ _M. F. Hasler_, Apr 19 2015 %Y A023479 Cf. A256958, A001057, A000027, A001477, A023443, ..., A023478, A023480, A023481, A023482, A022958, ..., A022996. %K A023479 sign,easy %O A023479 0,1 %A A023479 _N. J. A. Sloane_