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A223109 Number of 6Xn 0..2 arrays with exactly floor(6Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order 0
0, 16352, 6939648, 2870336499, 1153663937586, 460895553576913, 184306007437994168, 73918403027984409534, 29745203793179733648468, 12008412523648988394871332 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A223104

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

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

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

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

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

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

CROSSREFS

Sequence in context: A337417 A013690 A247826 * A126824 A236778 A344102

Adjacent sequences:  A223106 A223107 A223108 * A223110 A223111 A223112

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 14 2013

STATUS

approved

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Last modified December 6 09:38 EST 2021. Contains 349563 sequences. (Running on oeis4.)