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A278854 Number of nX7 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 1
8, 7072, 731444, 44571591, 2167109763, 92891826961, 3637198028018, 131770344218055, 4438698421228261, 139356074010503663, 4085772882929981162, 112111211337670010640, 2886455827088580869876, 69931800720183748326477 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A278855.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..83

EXAMPLE

Some solutions for n=2

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

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

CROSSREFS

Cf. A278855.

Sequence in context: A173190 A291879 A281450 * A115442 A216936 A090494

Adjacent sequences:  A278851 A278852 A278853 * A278855 A278856 A278857

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2016

STATUS

approved

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Last modified June 22 21:29 EDT 2021. Contains 345393 sequences. (Running on oeis4.)