83280domain: NAppears in sequencesExpansion of 1/((1-x)*(1+x+2*x^2-x^3)).at n=25A077911Number of patterns of n-rows in 12-tone music.at n=5A099031Number of length-4 0..n arrays with no repeated value differing from the previous repeated value by other than plus two, zero or minus 1.at n=15A269620