Number of (n+2) X (7+2) 0..4 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order.

A252960

Number of (n+2) X (7+2) 0..4 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order.

Terms

    a(0) =7495a(1) =1069a(2) =1429a(3) =2349a(4) =4019a(5) =6855a(6) =12573a(7) =23471a(8) =42337a(9) =81323a(10) =155799a(11) =290009a(12) =563689a(13) =1097993a(14) =2074061a(15) =4075537a(16) =7986375a(17) =15324923a(18) =30226561a(19) =59683643a(20) =115596469a(21) =229227527a(22) =454031043a(23) =887656421a(24) =1763720581a(25) =3506651437

External references