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A222877 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
438, 6013669, 66248732403, 1036481888251762, 11989849992460360377, 192967638304466060567720, 2288814374497410957902034456, 37306843891418465461998644495695, 449110977900671215379544970452138247 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A222878

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..13

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A088893 A043447 A006911 * A204380 A185683 A142753

Adjacent sequences:  A222874 A222875 A222876 * A222878 A222879 A222880

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 08 2013

STATUS

approved

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Last modified January 24 22:45 EST 2022. Contains 350565 sequences. (Running on oeis4.)