A233988 Number of (n+1)X(7+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal

291648, 16042420, 869143232, 52813238148, 3112596618224, 191944315497416, 11561322774100248, 712841251908681360, 43270951708019237896, 2662587274903549797456, 162193609948861341600456

Offset

1,1

Comments

Column 7 of A233989

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A250618 A252992 A253532 * A287048 A168500 A104328

Adjacent sequences: A233985 A233986 A233987 * A233989 A233990 A233991

Keyword

nonn

Author

R. H. Hardin, Dec 18 2013

Status

approved