login
A265446
Number of nX7 0..n+7-2 arrays with upper left zero and lower right n+7-2 and each element differing from its horizontal and vertical neighbors by one or two.
1
79, 9702, 2345091, 901139380, 268477963202, 48022286879776, 7361174970568815, 2071801325342229101, 724116679121249252209, 183209634201490947436174, 34289307231187455472534949, 6896491826761223944473943348
OFFSET
1,1
COMMENTS
Column 7 of A265447.
LINKS
EXAMPLE
Some solutions for n=2
..0..1..3..4..6..7..6....0..1..2..4..2..4..5....0..1..3..4..6..7..6
..2..3..2..3..4..6..7....1..2..3..5..4..6..7....2..3..1..2..4..6..7
CROSSREFS
Cf. A265447.
Sequence in context: A032910 A116235 A123814 * A145317 A363515 A251365
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2015
STATUS
approved