G.f. A(x) satisfies: A(x) = (1 + 2*x*A(x)^3)^2 / (1 + x*A(x)^3).

A352383

G.f. A(x) satisfies: A(x) = (1 + 2*x*A(x)^3)^2 / (1 + x*A(x)^3).

Terms

    a(0) =1a(1) =3a(2) =28a(3) =350a(4) =5020a(5) =78023a(6) =1278340a(7) =21740636a(8) =380161308a(9) =6792111260a(10) =123448657904

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