A233916 Number of (n+1)X(7+1) 0..7 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal

559736, 28936484, 1317291048, 76393662524, 3816435022128, 224247343748408, 11458028594887856, 672061212550600320, 34642386448309478976, 2024556302397626065444, 104880714157688434998824

Offset

1,1

Comments

Column 7 of A233917

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

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

Crossrefs

Sequence in context: A235969 A203659 A184475 * A206194 A250534 A234207

Adjacent sequences: A233913 A233914 A233915 * A233917 A233918 A233919

Keyword

nonn

Author

R. H. Hardin, Dec 17 2013

Status

approved