G.f. A(x) satisfies A(x) = ( (1 - x*A(x))/(1 - 5*x*A(x)) )^(1/2).

A372109

G.f. A(x) satisfies A(x) = ( (1 - x*A(x))/(1 - 5*x*A(x)) )^(1/2).

Terms

    a(0) =1a(1) =2a(2) =12a(3) =90a(4) =758a(5) =6850a(6) =64904a(7) =636250a(8) =6399120a(9) =65661250a(10) =684665828a(11) =7233956250a(12) =77278356246a(13) =833291781250

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