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A208008 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 1 vertically 1
2, 16, 90, 841, 5952, 43264, 393049, 4084441, 32673396, 334012176, 3665311664, 37536737536, 385814058880, 4801282939489, 53629177761313, 628423124320161, 7905277739708518, 101862335149216849, 1250237739999352500 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A208013

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..25

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A208113 A207448 A207362 * A208550 A214824 A317451

Adjacent sequences: A208005 A208006 A208007 * A208009 A208010 A208011

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 22 2012

STATUS

approved

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Last modified February 9 06:46 EST 2023. Contains 360153 sequences. (Running on oeis4.)