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A267793 Number of 7Xn 0..1 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value. 1
20, 400, 8000, 102954, 1234716, 13126812, 132388406, 1271314080, 11831791048, 107394660068, 957081246026, 8408442934462, 73058790472446, 629272663467509, 5382292144211926, 45776729662954256, 387532677732355814 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A267788.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

CROSSREFS

Cf. A267788.

Sequence in context: A189198 A224019 A171294 * A009964 A285874 A007577

Adjacent sequences:  A267790 A267791 A267792 * A267794 A267795 A267796

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 20 2016

STATUS

approved

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Last modified October 25 21:15 EDT 2021. Contains 348256 sequences. (Running on oeis4.)