948516domain: NAppears in sequencesNumber of nonroot nodes of outdegree 2 in all hex trees with n edges.at n=10A126185Deep factorization of n, A300560, converted from binary to decimal. (Binary digits obtained by recursively replacing each factor p^e with [primepi(p) [e]], then '[' = 1, ']' = 0.)at n=28A300561