Number of (n+1) X 3 0..7 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.
A203729
Number of (n+1) X 3 0..7 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.
Terms
- a(0) =14400a(1) =539456a(2) =19071424a(3) =681461824a(4) =24301391808a(5) =866928276544
External references
- oeis: A203729