A233476 Number of (n+2)X(2+2) 0..3 arrays with no increasing sequence of length 3 horizontally or vertically

8840905, 1542165988, 264110152411, 45223720670867, 7732943732414030, 1322255733920272536, 226068657791038230800, 38651333034861710486643, 6608229637236101895009182, 1129810754947963897221965651

Offset

1,1

Comments

Column 2 of A233480

Links

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

Example

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

Crossrefs

Sequence in context: A345617 A346334 A203669 * A078143 A216003 A293374

Adjacent sequences: A233473 A233474 A233475 * A233477 A233478 A233479

Keyword

nonn

Author

R. H. Hardin, Dec 11 2013

Status

approved