A233683 Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal

32, 548, 19248, 1723204, 350631128, 180309108120, 213645503481064, 637071561523768628, 4389462721204153964920, 76077651482837452211667424, 3050446568436589473373323664384, 307742402424024480499984248922221296

Offset

1,1

Comments

Diagonal of A233691

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=3
..1..3..2..3....0..2..3..2....0..2..0..2....0..1..0..1....1..3..2..0
..0..1..0..1....2..3..1..3....1..0..1..3....2..0..2..3....2..1..0..1
..1..3..2..0....3..1..2..1....3..1..3..2....3..1..0..2....1..3..2..3
..0..1..3..1....2..3..1..3....2..0..2..0....2..0..2..1....2..1..0..1

Crossrefs

Sequence in context: A154306 A004417 A283688 * A093751 A178372 A082557

Adjacent sequences: A233680 A233681 A233682 * A233684 A233685 A233686

Keyword

nonn

Author

R. H. Hardin, Dec 14 2013

Status

approved