124202domain: NAppears in sequencesa(n) = 1 - (7/6)*n + (2/3)*n^3 + (1/2)*n^4.at n=22A046998Number of branches in all ordered trees with n edges.at n=9A076540Expansion of psi(x^4) / phi(-x) in powers of x where phi(), psi() are Ramanujan theta functions.at n=29A187154