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A206655
Number of (n+2)X6 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..1 introduced in row major order
1
5805, 39928, 305347, 2324028, 17859249, 138177925, 1063970081, 8203665888, 63345367354, 488540591657, 3768192085504, 29076416560123, 224307762379140, 1730357228193003, 13349704026952320, 102988743467717545
OFFSET
1,1
COMMENTS
Column 4 of A206659
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..1..0..0....0..0..0..1..0..0....0..0..1..0..0..0....0..0..1..0..1..1
..0..1..1..1..1..1....0..1..0..1..1..0....1..1..1..0..1..1....0..0..0..0..1..0
..0..1..0..1..0..0....0..1..1..1..1..0....1..0..1..0..1..0....0..1..1..1..1..1
..0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..1..0....1..1..1..0..1..1
..0..1..1..1..1..1....1..0..0..1..0..0....1..1..1..1..1..0....0..1..0..0..1..0
..1..1..1..0..0..1....0..0..1..1..1..1....0..0..1..0..1..0....1..1..0..0..1..1
CROSSREFS
Sequence in context: A164649 A233045 A031618 * A270866 A251920 A348821
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 11 2012
STATUS
approved