87364domain: NAppears in sequencesG.f. satisfies: A(x) = x + A(A(x)^2)^2 where g.f. A(x) = Sum_{n>=1} a(n)*x^(3*n-2).at n=7A212277Number of permutations of length n having exactly one descent such that the first element of the permutation is an odd number.at n=16A257198