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A184194
Half the number of (n+1)X7 binary arrays with no 2X2 subblock containing exactly one 1
1
1908, 90185, 3901193, 174401423, 7751834608, 345350598641, 15380031974284, 685056630399242, 30513075478492147, 1359098254767356165, 60536202458667509811, 2696372582587335783277, 120100441888134027505701
OFFSET
1,1
COMMENTS
Column 6 of A184197
LINKS
EXAMPLE
Some solutions for 3X7
..0..1..0..1..0..0..1....0..1..1..1..0..1..1....0..1..0..0..0..1..1
..1..1..0..1..1..1..0....1..1..0..1..1..1..0....1..0..1..1..1..1..1
..0..1..1..0..1..1..1....1..0..1..1..0..1..1....1..1..0..0..0..0..1
CROSSREFS
Sequence in context: A362444 A206124 A251463 * A209551 A238059 A186789
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 10 2011
STATUS
approved