A234060 Number of (n+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally or diagonally downwards

205808, 2080660489, 253278425289056, 375374879187809108516, 6735349509943736443611464626, 1466848296931406086389233018287064725, 3875312547093504478905733951478761298320690750

Offset

1,1

Comments

Diagonal of A234068

Links

R. H. Hardin, Table of n, a(n) for n = 1..9

Example

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

Crossrefs

Sequence in context: A234068 A234069 A234061 * A115946 A082176 A178285

Adjacent sequences: A234057 A234058 A234059 * A234061 A234062 A234063

Keyword

nonn

Author

R. H. Hardin, Dec 19 2013

Status

approved