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A225980 Number of nX6 binary arrays whose sum with another nX6 binary array containing no more than two 1s has rows and columns in lexicographically nondecreasing order 1
42, 790, 16361, 361361, 7718077, 148890101, 2513743785, 36836074434, 470279869497, 5279223820491, 52686610737385, 472630223607623, 3849896640784837, 28735919289705656, 198113452132002555 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A225982

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..29

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A252827 A231158 A030197 * A231164 A020933 A241923

Adjacent sequences:  A225977 A225978 A225979 * A225981 A225982 A225983

KEYWORD

nonn

AUTHOR

R. H. Hardin May 22 2013

STATUS

approved

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Last modified October 17 21:37 EDT 2019. Contains 328134 sequences. (Running on oeis4.)