Search: id:A099235
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%I A099235
%S A099235 1,1,5,15,45,140,431,1326,4085,12580,38740,119305,367411,1131476,
%T A099235 3484490,10730820,33046585,101770120,313410816,965178576,2972359720,
%U A099235 9153665985,28189589705,86812537085,267347509271,823322219501
%N A099235 A quadrisection of 1/(1-x-x^5).
%C A099235 A row of A099233.
%F A099235 G.f.: 1/(1-x(1+x)^4); a(n)=sum{k=0..n, binomial(4(n-k), k)}; a(n)=a(n-1)+4a(n-2)+6a(n-3)+4a(n-4)+a(n-5); 
               a(n)=A003520(4n).
%Y A099235 Sequence in context: A000335 A005030 A084244 this_sequence A035069 A001869 
               A058425
%Y A099235 Adjacent sequences: A099232 A099233 A099234 this_sequence A099236 A099237 
               A099238
%K A099235 easy,nonn
%O A099235 0,3
%A A099235 Paul Barry (pbarry(AT)wit.ie), Oct 08 2004

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