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A278853 Number of nX6 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 1
1, 1486, 118158, 4950399, 154090507, 4026240722, 92891826961, 1935392159582, 36831668321915, 644951602341507, 10454319538089429, 157736949429737228, 2227039251935175027, 29569631792451694669, 370951068728197563294 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A278855.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..153

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A278855.

Sequence in context: A269923 A288075 A104742 * A051260 A317593 A257760

Adjacent sequences:  A278850 A278851 A278852 * A278854 A278855 A278856

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2016

STATUS

approved

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Last modified May 9 13:09 EDT 2021. Contains 343742 sequences. (Running on oeis4.)