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A206657 Number of (n+2)X8 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
86251, 910169, 11172263, 138177925, 1731487818, 21966491761, 278034719471, 3516414118117, 44628923555800, 565813299809571, 7168644306531356, 90922800550397291, 1152828653381785625, 14613172033518086974 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A206659

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..0..1..1..0..1..1..0..1....0..1..0..1..1..0..0..1....0..1..0..0..1..1..1..0

..0..1..0..1..0..1..0..0....1..0..0..0..1..0..1..0....1..1..0..0..1..1..0..0

..0..1..1..1..1..1..0..1....1..1..0..0..1..0..0..0....1..1..1..0..1..0..0..0

..0..1..0..0..0..0..0..0....0..0..0..1..1..0..0..1....0..0..0..0..1..0..0..1

..1..1..1..0..0..1..0..1....1..0..0..0..1..0..1..1....0..0..1..0..1..1..1..1

..0..1..0..0..1..1..0..1....1..1..1..1..1..0..1..1....0..1..1..0..1..0..0..0

CROSSREFS

Sequence in context: A186065 A238309 A203388 * A231322 A237783 A236353

Adjacent sequences:  A206654 A206655 A206656 * A206658 A206659 A206660

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 11 2012

STATUS

approved

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Last modified September 24 14:46 EDT 2020. Contains 337321 sequences. (Running on oeis4.)