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

42, 790, 16361, 361361, 7718077, 148890101, 2513743785, 36836074434, 470279869497, 5279223820491, 52686610737385, 472630223607623, 3849896640784837, 28735919289705656, 198113452132002555

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