A233625 Number of (7+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally or diagonally downwards

4402732038656, 47645673900633963, 495756869782694668272, 5121219107749974037717423, 52729363102903526091849167544, 542475945824577650443131126460974, 5579329268797957710001574591451050376

Offset

1,1

Comments

Row 7 of A233618

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

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

Crossrefs

Sequence in context: A013640 A185431 A139574 * A237361 A216909 A173710

Adjacent sequences: A233622 A233623 A233624 * A233626 A233627 A233628

Keyword

nonn

Author

R. H. Hardin, Dec 14 2013

Status

approved