A251805 Number of (5+1)X(n+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01

2430631, 474547100, 44356434596, 2446811684440, 90717637876583, 2466029519190492, 52256028323545001, 902865704126649438, 13158989979297456736, 166106632087042847162, 1854323843850427384132

Offset

1,1

Comments

Row 5 of A251801

Links

R. H. Hardin, Table of n, a(n) for n = 1..115

Example

Some solutions for n=1
..0..2....0..0....0..2....0..0....0..2....0..2....0..0....0..0....0..0....0..2
..0..2....2..2....0..2....0..2....0..2....0..2....0..2....0..2....0..0....0..0
..2..3....0..2....0..1....1..2....0..0....0..1....2..1....0..2....2..2....1..1
..2..3....1..3....3..2....3..2....1..3....1..2....0..2....2..1....2..3....0..2
..1..0....3..2....0..1....0..3....1..2....1..2....0..3....0..1....0..2....0..1
..1..3....2..3....0..3....2..0....3..2....3..2....0..3....0..0....2..0....3..2

Crossrefs

Sequence in context: A022247 A198781 A104941 * A184669 A184569 A210153

Adjacent sequences: A251802 A251803 A251804 * A251806 A251807 A251808

Keyword

nonn

Author

R. H. Hardin, Dec 09 2014

Status

approved