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A278324 Number of nX7 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes. 1
56, 4991, 251892, 11947350, 570738085, 26606146271, 1159826452573, 46588303100299, 1741053359883624, 61687083048618477, 2105403821298913363, 69685735738121699248, 2231675758500253736280, 68674888544867993485304 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A278325.
LINKS
EXAMPLE
Some solutions for n=2
..1..0..1..1..0..0..0. .0..0..1..1..1..0..0. .0..0..1..1..1..1..0
..1..1..0..1..1..1..1. .0..0..0..0..1..0..0. .1..1..1..0..0..0..0
CROSSREFS
Cf. A278325.
Sequence in context: A271138 A271139 A271140 * A009600 A278777 A202565
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 18 2016
STATUS
approved

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Last modified May 29 21:02 EDT 2024. Contains 372952 sequences. (Running on oeis4.)