449596

Appears in sequences

• G.f. A(x) satisfies: [x^(n+1)] A(F^n(x)) = 0 for n>0 where F^n(x) denotes the n-th iteration of F(x) = x+x^2 with F^0(x)=x.at n=10A187009
• Expansion of 1/sqrt(1 - 4*1*x/(1 - 4*2*x/(1 - 4*3*x/(1 - 4*4*x/(1 - 4*5*x/(1 - ...)))))), a continued fraction.at n=5A360304