A198207 - OEIS

A198207

Number of 2nX6 0..3 arrays with values 0..3 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors

658, 50729, 3603458, 276030525, 21989253467, 1791994477631, 148260119458624, 12388301166414053, 1042156486950351473, 88068293220220746165, 7464940011082766165729, 634039417143962239696103

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

OFFSET

1,1

COMMENTS

Column 3 of A198209

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A210091 A068260 A252365 * A171393 A349586 A023294

Adjacent sequences: A198204 A198205 A198206 * A198208 A198209 A198210

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 22 2011

STATUS

approved