376372920domain: NAppears in sequencesa(n) = (n+1)*(n+2)^2*(n+3)^2*(n+4)^2*(n+5)^2*(n+6)/86400.at n=19A108679Fifth column of triangle A103371 (without leading zeros).at n=19A134287Number of n X 7 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=20A208141