Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order.
A204565
Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order.
Terms
- a(0) =8a(1) =42a(2) =256a(3) =1682a(4) =11448a(5) =79162a(6) =551216a(7) =3849762a(8) =26922088a(9) =188375882a(10) =1318394976a(11) =9228056242a(12) =64594267928a(13) =452153498202
External references
- oeis: A204565