Number of (n+2)X9 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.
A203922
Number of (n+2)X9 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.
Terms
- a(0) =225704a(1) =1008200a(2) =3376768a(3) =11309768a(4) =38569884a(5) =132454088a(6) =457030140a(7) =1565984648a(8) =5374946016a(9) =18438912648a(10) =63255158600a(11) =216863808200a(12) =742452142224
External references
- oeis: A203922