A233914 Number of (n+1) X (5+1) 0..7 arrays with every 2 X 2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal.

36976, 807964, 15981048, 369978404, 7752002928, 179779430264, 3816435022128, 88174304365260, 1882101558915232, 43329895764737680, 928159189164216848, 21305336764584666304, 457639958123218639480, 10478566423139329437168

Offset

1,1

Comments

Column 5 of A233917.

Links

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

Example

Some solutions for n=1:
..6..7..3..7..3..1....1..0..4..0..4..0....6..2..6..2..3..2....0..2..6..5..2..5
..2..5..2..4..2..5....5..2..5..3..2..3....4..5..4..5..7..5....4..1..4..1..0..1

Crossrefs

Sequence in context: A223304 A190383 A051393 * A144801 A144812 A057881

Adjacent sequences: A233911 A233912 A233913 * A233915 A233916 A233917

Keyword

nonn

Author

R. H. Hardin, Dec 17 2013

Status

approved