G.f.: (1 + 22*x - 34*x^2 + 14*x^3)/((1 - x)^2*(1 - 6*x + 8*x^2)).

A265037

G.f.: (1 + 22*x - 34*x^2 + 14*x^3)/((1 - x)^2*(1 - 6*x + 8*x^2)).

Terms

    a(0) =1a(1) =30a(2) =185a(3) =886a(4) =3855a(5) =16064a(6) =65569a(7) =264930a(8) =1065059a(9) =4270948a(10) =17105253a(11) =68463974a(12) =273941863a(13) =1095939432a(14) =4384101737a(15) =17537095018a(16) =70149756267a(17) =280601777516

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