15434831091domain: NAppears in sequencesPermanent of (0,1)-matrix of size n X (n+d) with d=6 and n zeros not on a line.at n=9A090010a(n) = (n+5)*a(n-1) + (n-1)*a(n-2), a(-1)=0, a(0)=1.at n=10A176732