A204499 Number of (n+2)X8 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically

797822969, 5506995671, 29239334379, 402163470675, 2160920648295, 16952599195335, 286595565957180, 2485931640506982, 24413956669848627, 328815740430183078, 2877550907300925813, 27288563517875985453

Offset

1,1

Comments

Column 6 of A204501

Links

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

Example

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

Crossrefs

Sequence in context: A166227 A104829 A198173 * A166072 A152156 A017540

Adjacent sequences: A204496 A204497 A204498 * A204500 A204501 A204502

Keyword

nonn

Author

R. H. Hardin Jan 15 2012

Status

approved