G.f. satisfies: A(x) = theta_3( x*A(x) )^2, where theta_3(x) is Jacobi's theta_3 function.

A212326

G.f. satisfies: A(x) = theta_3( x*A(x) )^2, where theta_3(x) is Jacobi's theta_3 function.

Terms

    a(0) =1a(1) =4a(2) =20a(3) =112a(4) =676a(5) =4312a(6) =28704a(7) =197600a(8) =1397060a(9) =10090676a(10) =74152456a(11) =552666448a(12) =4167528000a(13) =31736182776a(14) =243698432960

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