61709

Appears in sequences

• G.f. satisfies: A(x) = Sum_{n>=0} A_n(x) * A(x)^n where A_{n+1}(x) = A_n(A(x)) denotes iteration with A_0(x)=x and A'(0)=1.at n=8A180256
• a(n) = (2 cos(Pi/15))^n + (2 cos(7 Pi/15))^n + (2 cos(11 Pi/15))^n + (2 cos(13 Pi/15))^n.at n=17A306603
• a(n) = (8*n^3 + 12*n^2 + 4*n - 9)/3.at n=27A358035