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A278176
Number of nX7 0..1 arrays with every element both equal and not equal to some elements at offset (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero.
1
0, 436, 27692, 2419304, 209105063, 18218081491, 1580935773900, 137264328312479, 11916307472109969, 1034507705866421424, 89809589733457630488, 7796723202173710849973, 676863948079571480111201
OFFSET
1,2
COMMENTS
Column 7 of A278177.
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..1..0..0..0. .0..1..1..1..0..1..0. .0..1..1..0..1..1..0
..1..0..1..0..0..1..0. .0..0..1..1..0..1..0. .0..1..0..1..1..1..0
..1..0..0..1..1..1..0. .0..1..1..0..0..1..0. .1..1..1..0..0..1..1
CROSSREFS
Cf. A278177.
Sequence in context: A234221 A255777 A283928 * A243233 A216988 A190828
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 13 2016
STATUS
approved