A229411 Number of nX7 0..3 arrays avoiding 11 horizontally, 22 vertically, 33 antidiagonally and 00 diagonally

11772, 22684613, 46408035676, 95053083585891, 194334416016079648, 397464769862060665547, 812793729526357032659346, 1662077845986538386898746421, 3398973083707574732833877530359

Offset

1,1

Comments

Column 7 of A229412

Links

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

Example

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

Crossrefs

Sequence in context: A250695 A250680 A045307 * A235316 A336658 A321158

Adjacent sequences: A229408 A229409 A229410 * A229412 A229413 A229414

Keyword

nonn

Author

R. H. Hardin Sep 22 2013

Status

approved