Number of (n+2) X (3+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.
A253039
Number of (n+2) X (3+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.
Terms
- a(0) =928a(1) =998a(2) =1750a(3) =3119a(4) =6086a(5) =12641a(6) =25184a(7) =54251a(8) =111467a(9) =239582a(10) =500112a(11) =1084951a(12) =2264912a(13) =4927102a(14) =10326385a(15) =22471670a(16) =47248426a(17) =102846945a(18) =216359840a(19) =471311716a(20) =993403943a(21) =2162719496a(22) =4561950718a(23) =9932410117a(24) =20975309974
External references
- oeis: A253039