333661domain: NAppears in sequencesNumber of partitions of 5n such that cn(1,5) = cn(4,5) < cn(2,5) = cn(3,5) <= cn(0,5).at n=18A036891Numbers k such that k and k^2 use only the digits 1, 2, 3, 6 and 9.at n=44A136981