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A202741 Number of nX7 0..1 arrays with row sums equal and column sums unequal to adjacent columns 0
2, 214, 14258, 613950, 24620522, 967878370, 37121438930, 1401569558590, 52383342552410, 1938999772255314, 71224141762895090 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A202742

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A181903 A078280 A125058 * A239529 A101393 A124188

Adjacent sequences:  A202738 A202739 A202740 * A202742 A202743 A202744

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 23 2011

STATUS

approved

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Last modified September 17 11:29 EDT 2019. Contains 327129 sequences. (Running on oeis4.)