368759domain: NAppears in sequencesa(n) = n^5 - n^3 - 2*n^2 + 1.at n=13A177075Semiprimes of the form n^5-n^3-2*n^2+1.at n=4A177087Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,0,3,4 for x=0,1,2,3,4.at n=11A196431