356035078101domain: NAppears in sequencesNumber of humps in all Motzkin paths of length n. (A hump is an upstep followed by 0 or more flatsteps followed by a downstep.)at n=27A097861Expansion of (1/2)*(1/(x+1)+1/(sqrt(-3*x^2-2*x+1))).at n=27A246437