Search: id:A104630
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%I A104630
%S A104630 0,1,5,18,60,198,655,2171,7200,23880,79200,262669,871145,2889162,
%T A104630 9581940,31778622,105394195,349541159,1159257600,3844692240,12750969600,
%U A104630 42288749161,140251162205,465144722658,1542658254060,5116245273558
%N A104630 Expansion of x/(1-5x+7x^2-5x^3+x^4).
%C A104630 Transform of the Fibonacci numbers under the Riordan array (1/(1-x)^2,
               x(1-x)^2)) (convolution array of natural numbers).
%F A104630 a(n)=5a(n-1)-7a(n-2)+5a(n-3)-a(n-4); a(n)=sum{k=0..n, binomial(n+k+1, 
               2k+1)F(k)}.
%Y A104630 Sequence in context: A034567 A133648 A099449 this_sequence A062809 A122234 
               A113301
%Y A104630 Adjacent sequences: A104627 A104628 A104629 this_sequence A104631 A104632 
               A104633
%K A104630 easy,nonn
%O A104630 0,3
%A A104630 Paul Barry (pbarry(AT)wit.ie), Mar 17 2005

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