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A207699 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 0 vertically 1
2, 16, 102, 729, 8151, 105625, 1369900, 19891600, 334808748, 6181890625, 122401625127, 2624869821025, 60940432893132, 1515981414587236, 40169735443014974, 1131549414709903225, 33790458968920700067 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207703

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A209645 A207062 A207398 * A207902 A267713 A207746

Adjacent sequences:  A207696 A207697 A207698 * A207700 A207701 A207702

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 19 2012

STATUS

approved

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Last modified September 16 12:35 EDT 2021. Contains 347472 sequences. (Running on oeis4.)