Search: id:A158986
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%I A158986
%S A158986 1,2,1,2,1,1,4,4,0,2,1,8,24,32,14,8,8,0,1,1,16,112,448,1116,
%T A158986 1744,1552,384,700,736,160,128,64,0,0,0,2,1,32,480,4480,29112,
%U A158986 139552,509600,1441024,3166616,5345344,6668992,5473536,1494624
%V A158986 1,-2,1,-2,-1,1,-4,4,0,-2,1,-8,24,-32,14,8,8,0,-1,1,-16,112,-448,1116,
%W A158986 -1744,1552,-384,-700,736,-160,-128,64,0,0,0,-2,1,-32,480,-4480,29112,
%X A158986 -139552,509600,-1441024,3166616,-5345344,6668992,-5473536,1494624
%N A158986 Coefficients of polynomials Q(n,x):=-2+(1+Q(n-1,x))^2, where Q(1,x)=x-2.
%C A158986 Let P(n,x) be the nth polynomial at A158984. Then
%C A158986 Q(n,x)=P(n-1,x)-1 is a factor of P(n,x).
%D A158986 Clark Kimberling, "Polynomials defined by the recurrence" P(n+1)=(P(n)+c-a)^2 
               - c," preprint, 2009.
%e A158986 Row 1: 1 -2 (from x-2)
%e A158986 Row 2: 1 -2 -1 (from x^2-2x-1)
%e A158986 Row 3: 1 -4 4 0 -2
%e A158986 Row 4: 1 -8 24 -32 14 8 8 0 -1
%Y A158986 A158982, A158983, A158984, A158985.
%Y A158986 Sequence in context: A024680 A083531 A003417 this_sequence A079900 A117354 
               A140324
%Y A158986 Adjacent sequences: A158983 A158984 A158985 this_sequence A158987 A158988 
               A158989
%K A158986 sign,tabl
%O A158986 1,2
%A A158986 Clark Kimberling (ck6(AT)evansville.edu), Apr 02 2009

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