A234390 Number of (n+2)X(2+2) 0..3 arrays with no increasing sequence of length 3 horizontally or diagonally downwards

10683130, 1687142836, 252617381130, 37540308719262, 5540782611170014, 816701376137485043, 120273769124195306186, 17708686303582891399354, 2607060592375039875597040, 383797384931913109490872473

Offset

1,1

Comments

Column 2 of A234393

Links

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

Example

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

Crossrefs

Sequence in context: A233500 A195224 A157762 * A237149 A344634 A071370

Adjacent sequences: A234387 A234388 A234389 * A234391 A234392 A234393

Keyword

nonn

Author

R. H. Hardin, Dec 25 2013

Status

approved