%I A001478
%S A001478 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,
%T A001478 26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,
               49,
%U A001478 50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,
               73
%V A001478 -1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13,-14,-15,-16,-17,-18,-19,-20,
               -21,-22,-23,-24,-25,
%W A001478 -26,-27,-28,-29,-30,-31,-32,-33,-34,-35,-36,-37,-38,-39,-40,-41,-42,-43,
               -44,-45,-46,-47,-48,-49,
%X A001478 -50,-51,-52,-53,-54,-55,-56,-57,-58,-59,-60,-61,-62,-63,-64,-65
%N A001478 The negative integers.
%H A001478 David Wasserman, <a href="b001478.txt">Table of n, a(n) for n = 1..1000</
               a>
%H A001478 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/
               RecursiveSequences.html">Recursive Sequences</a>
%H A001478 <a href="Sindx_Cor.html#core">Index entries for "core" sequences</a>
%F A001478 a(n)=-n; G.f.: -x/(1-x)^2.
%F A001478 G.f. A(x) satisfies A(x)+A(-x)=4A(x^2), A(x)A(-x)=A(x^2), A(x)^2+A(x^2)=4A(x)A(x^2). 
               - Michael Somos Mar 23 2004
%p A001478 A001478 := n->-n;
%t A001478 Table[ -n, {n, 1, 50}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), 
               Apr 01 2006
%o A001478 (PARI) a(n)=-n
%Y A001478 Sequence in context: A130446 A132086 A136602 this_sequence A001489 A023443 
               A099570
%Y A001478 Adjacent sequences: A001475 A001476 A001477 this_sequence A001479 A001480 
               A001481
%K A001478 core,sign,easy
%O A001478 1,2
%A A001478 N. J. A. Sloane (njas(AT)research.att.com).