574841domain: NAppears in sequencesNumber of compositions of n into parts {3,4,5} when all parts 3,4 and 5 are present.at n=40A243254Positive integers m such that 2*m^2 - 1 = x^4 + y^4 for some nonnegative integers x and y with |x - y| > 1.at n=18A343913