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A278631 Number of nX5 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes. 1
90, 27521, 3739008, 387551595, 33967584488, 2593097277036, 175644502146694, 10734760074025367, 600850493598843960, 31181144570813141891, 1514424057857433189463, 69299571270775145840652 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A278634.
LINKS
EXAMPLE
Some solutions for n=2
..1..2..1..2..2. .1..1..1..0..2. .0..0..0..2..2. .0..0..0..0..2
..2..2..2..1..0. .1..2..1..1..0. .0..0..2..2..1. .0..0..2..2..1
CROSSREFS
Cf. A278634.
Sequence in context: A200503 A199229 A278411 * A323317 A246634 A270508
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 24 2016
STATUS
approved

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Last modified July 16 12:01 EDT 2024. Contains 374348 sequences. (Running on oeis4.)