A233617 Number of (n+2)X(7+2) 0..2 arrays with no increasing sequence of length 3 horizontally or diagonally downwards

2555252447715, 29320690351065445, 333687213953551022545, 3795208453266491188651365, 43154380460437147553733185891, 490686983642703696091848306482022, 5579329268797957710001574591451050376

Offset

1,1

Comments

Column 7 of A233618

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

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..1..0....0..0..0..0..0..0..0..1..1
..2..1..1..1..1..1..1..0..1....1..0..2..0..2..1..1..1..1

Crossrefs

Sequence in context: A361935 A136174 A233496 * A323052 A015434 A017292

Adjacent sequences: A233614 A233615 A233616 * A233618 A233619 A233620

Keyword

nonn

Author

R. H. Hardin, Dec 14 2013

Status

approved