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%I #10 Oct 23 2019 20:32:55
%S 7,23,56,120,241,467,886,1660,3087,5715,10552,19452,35825,65943,
%T 121342,223240,410663,755391,1389448,2555664,4700673,8645963,15902486,
%U 29249316,53797967,98949979,181997480,334745652,615693345
%N a(n) = A027113(n, n+3).
%F Conjectures from _Colin Barker_, Feb 20 2016: (Start)
%F a(n) = 3*a(n-1)-2*a(n-2)-a(n-4)+a(n-5) for n>7.
%F G.f.: x^3*(7+2*x+x^2-2*x^3) / ((1-x)^2*(1-x-x^2-x^3)).
%F (End)
%K nonn
%O 3,1
%A _Clark Kimberling_
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