A205158 - OEIS

A205158

Number of n X 5 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..3 introduced in row major order.

40, 31168, 15821727, 8797534495, 4826926610498, 2654271236904226, 1458877292453477918, 801931987315155805350, 440804977416966931974046, 242302335602851559365684237, 133188963363707384391102837136, 73211445306645369967259855981514, 40242939870572168051645146035499410

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..33

EXAMPLE

Some solutions for n=5:

..0..0..1..0..0....0..0..1..0..1....0..1..1..0..0....0..0..1..0..0

..2..1..3..2..2....0..2..2..1..0....0..0..1..0..0....2..0..3..0..2

..2..2..3..2..2....3..1..0..1..0....1..2..3..2..1....0..3..1..1..2

..3..1..1..3..1....0..0..1..2..1....2..0..1..0..0....0..2..0..1..0

..1..2..1..3..2....3..3..0..2..0....0..0..3..0..1....3..2..2..3..2

CROSSREFS

Column 5 of A205161.

Sequence in context: A159390 A376744 A204682 * A205307 A185194 A214138

Adjacent sequences: A205155 A205156 A205157 * A205159 A205160 A205161

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 22 2012

STATUS

approved