Search: id:A113440
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%I A113440
%S A113440 1,2,8,34,146,627,2689,11521,49337,211233,904306,3871305,16572812,
%T A113440 70947073,303719624,1300203634,5566087073,23828058969,102006385362,
%U A113440 436682772844,1869410868456,8002827727921,34259590954322
%N A113440 First row of A113439.
%F A113440 a(n) = 9a(n-1)-28a(n-2)+38a(n-3)-20a(n-4)+a(n-5)
%F A113440 g.f.: -(1-7*x+18*x^2-20*x^3+8*x^4)/(-1+9*x-28*x^2+38*x^3-20*x^4+x^5)
%Y A113440 Cf. a(n)=A113439(4n).
%Y A113440 Sequence in context: A000163 A117616 A014445 this_sequence A034999 A067336 
               A151829
%Y A113440 Adjacent sequences: A113437 A113438 A113439 this_sequence A113441 A113442 
               A113443
%K A113440 nonn
%O A113440 0,2
%A A113440 Floor van Lamoen (fvlamoen(AT)hotmail.com), Nov 04 2005

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