A233950 Number of (n+1)X(n+1) 0..5 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal

80, 2820, 238800, 52918992, 30386593584, 46042738610392, 183601380666535560, 1941274548685367025892

Offset

1,1

Comments

Diagonal of A233958

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=2
..5..3..2....5..3..1....0..1..0....4..2..3....1..3..5....5..3..1....4..5..4
..4..5..3....3..4..2....1..3..1....2..3..5....3..2..4....4..2..3....2..3..5
..2..3..2....1..2..3....0..2..0....0..2..3....5..3..2....5..4..5....0..2..4

Crossrefs

Sequence in context: A277764 A328875 A154307 * A324071 A017796 A035735

Adjacent sequences: A233947 A233948 A233949 * A233951 A233952 A233953

Keyword

nonn

Author

R. H. Hardin, Dec 18 2013

Status

approved