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a(n) = A027113(n, n+4).
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%I #10 Oct 23 2019 20:33:10

%S 16,59,155,352,738,1475,2861,5444,10232,19079,35395,65452,120786,

%T 222615,409965,754616,1388592,2554723,4699643,8644840,15901266,

%U 29247995,53796541,98948444,181995832,334743887,615691459,1132434708

%N a(n) = A027113(n, n+4).

%F Conjectures from _Colin Barker_, Feb 20 2016: (Start)

%F a(n) = 4*a(n-1)-5*a(n-2)+2*a(n-3)-a(n-4)+2*a(n-5)-a(n-6) for n>9.

%F G.f.: x^4*(16-5*x-x^2-5*x^3+3*x^4) / ((1-x)^3*(1-x-x^2-x^3)).

%F (End)

%K nonn

%O 4,1

%A _Clark Kimberling_