G.f. A(x) satisfies: x = A(x) * (1 + A(x)) * (1 - 4*A(x)).

A250888

G.f. A(x) satisfies: x = A(x) * (1 + A(x)) * (1 - 4*A(x)).

Terms

    a(0) =1a(1) =3a(2) =22a(3) =195a(4) =1938a(5) =20622a(6) =229836a(7) =2648547a(8) =31301050a(9) =377301210a(10) =4620769140a(11) =57333249870a(12) =719179311732

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