Expansion of g.f. A(x) satisfying A( 2*x^2/(1-2*x)^2 ) = 2*A(x)^2.

A371712

Expansion of g.f. A(x) satisfying A( 2*x^2/(1-2*x)^2 ) = 2*A(x)^2.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =20a(4) =74a(5) =292a(6) =1204a(7) =5112a(8) =22182a(9) =97964a(10) =439252a(11) =1995864a(12) =9175108a(13) =42610024a(14) =199643240a(15) =942605936a(16) =4480195078a(17) =21417889996a(18) =102907803268a(19) =496639331384

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