-5846

Appears in sequences

• G.f. A(x) satisfies A(A(x)) = B(x) such that the coefficients of B(x) consist of all 1's and 2's, with A(0) = 0.at n=14A112105
• Expansion of Product_{k>0} (1+k^2*x^k)^(-1/k).at n=15A303354