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A204968 Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally at least two different ways, and new values 0..1 introduced in row major order 1
219755, 11064389, 547910909, 26548318278, 1294422106052, 63103000253312, 3075660728764228, 149917008692340855, 7307374345089599577, 356181560686179960227, 17361282472044746608190, 846237255084435072552419 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A204971

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A254912 A254905 A257207 * A234489 A223369 A254509

Adjacent sequences:  A204965 A204966 A204967 * A204969 A204970 A204971

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 21 2012

STATUS

approved

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Last modified December 10 23:07 EST 2016. Contains 279021 sequences.