242440domain: NAppears in sequencesOne half of 9-factorial numbers.at n=4A035012a(n) = 4*(3*n+2)*(2*n+1)*(n+2)*(n+1).at n=10A155122Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,2,2 for x=0,1,2,3,4.at n=9A197556