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 A023450 #14 Jul 08 2025 17:16:26 %S A023450 -8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17, %T A023450 18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, %U A023450 41,42,43,44,45,46,47,48,49,50,51 %N A023450 n-8. %H A023450 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A023450 Robert G. Wilson v, <a href="/A001477/a001477.txt">American English names for the numbers from 0 to 100999 without spaces or hyphens</a>. %H A023450 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1). %F A023450 a(n) = 2 a(n-1) - a(n-2). a(n) = -A022964(n). G.f.: (-8+9*x)/(1-x)^2. - _M. F. Hasler_, Apr 18 2015 %p A023450 A023450 := n -> n-8; # _M. F. Hasler_, Apr 18 2015 %t A023450 Range[0,60]-8 (* _M. F. Hasler_, Apr 18 2015 *) %o A023450 (PARI) a(n)=n-8 %Y A023450 Cf. A256958, A001057, A000027, A001477, A023443, ..., A023449, A023451, ..., A023482, A022958, ..., A022996. %K A023450 sign,easy %O A023450 0,1 %A A023450 _N. J. A. Sloane_