Number of (n+2) X (1+2) 0..1 arrays with no 3 x 3 subblock diagonal sum one and no antidiagonal sum one.

A255075

Number of (n+2) X (1+2) 0..1 arrays with no 3 x 3 subblock diagonal sum one and no antidiagonal sum one.

Terms

    a(0) =208a(1) =676a(2) =2444a(3) =8836a(4) =31960a(5) =115600a(6) =418200a(7) =1512900a(8) =5473500a(9) =19802500a(10) =71645000a(11) =259210000a(12) =937825000a(13) =3393062500a(14) =12276187500a(15) =44415562500a(16) =160696875000a(17) =581406250000

External references