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A207891 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically 1
2, 16, 84, 870, 11196, 205258, 5888458, 243318702, 13997746826, 1221755612002, 156218303323950, 28414320426633740, 7652673923813342076, 3016400502880224884497, 1720903600232362236817474 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207895

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..16

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A283951 A207340 A207768 * A207655 A071893 A220505

Adjacent sequences:  A207888 A207889 A207890 * A207892 A207893 A207894

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 21 2012

STATUS

approved

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Last modified December 4 19:40 EST 2021. Contains 349526 sequences. (Running on oeis4.)