A234072 Number of (4+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally or diagonally downwards

38351813588, 85328128508052, 179447238884491424, 375374879187809108516, 780818891634613042546256, 1623011875414913732501725008, 3371759671693606050632389947964, 7004150450174968339641692532294048

Offset

1,1

Comments

Row 4 of A234068

Links

R. H. Hardin, Table of n, a(n) for n = 1..81

Example

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

Crossrefs

Sequence in context: A038832 A038821 A139780 * A112446 A295460 A306430

Adjacent sequences: A234069 A234070 A234071 * A234073 A234074 A234075

Keyword

nonn

Author

R. H. Hardin, Dec 19 2013

Status

approved