Search: id:A025245
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%I A025245
%S A025245 1,2,5,11,26,65,163,416,1081,2837,7516,20089,54077,146478,398997,1092215,
%T A025245 3003014,8289569,22964919,63828252,177931665,497367721,1393768952,
%U A025245 3914793457,11019379609,31079140922,87818240869,248571086403,704722488690
%N A025245 (1/2)*s(n+3), where s = A025244.
%F A025245 G.f.: (1-x-x^2-4*x^3-sqrt(1-2*x-x^2-6*x^3+x^4))/(4*x^3) - Michael Somos, 
               Jun 08, 2000.
%o A025245 (PARI) a(n)=polcoeff((-sqrt(1-2*x-x^2-6*x^3+x^4+x^4*O(x^n)))/4,n+3)
%Y A025245 Sequence in context: A095981 A082397 A051286 this_sequence A079223 A095892 
               A000664
%Y A025245 Adjacent sequences: A025242 A025243 A025244 this_sequence A025246 A025247 
               A025248
%K A025245 nonn
%O A025245 1,2
%A A025245 Clark Kimberling (ck6(AT)evansville.edu)

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