A233503 Number of (6+2) X (n+2) 0..2 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards.

166865923720, 609539583118581, 2257956973020836034, 8402516744270059192510, 31268023473905931187253907, 116334766873906705110905737848, 432821541000735919144507449122965, 1610312691435881566858054135145427150

Offset

1,1

Comments

Row 6 of A233497.

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

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

Crossrefs

Cf. A233497.

Sequence in context: A288283 A271819 A304235 * A241501 A197633 A339122

Adjacent sequences: A233500 A233501 A233502 * A233504 A233505 A233506

Keyword

nonn

Author

R. H. Hardin, Dec 11 2013

Status

approved