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A205270 Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..1 introduced in row major order 1
596414, 51416847, 4422079769, 376019663515, 32079295935853, 2736913657929574, 233446295978015247, 19913133812861822666, 1698610786398746095844, 144892453140046154281434, 12359421076416241941756207 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A205273

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A237493 A232361 A236736 * A187643 A283956 A151435

Adjacent sequences:  A205267 A205268 A205269 * A205271 A205272 A205273

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved

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Last modified January 28 20:05 EST 2022. Contains 350657 sequences. (Running on oeis4.)