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A222876 Number of nX6 0..3 arrays with no more than floor(nX6/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
131, 399849, 1340197778, 4643150795564, 16364046520925461, 58365501277437736651, 209946033151635587197031, 760026285340633515213165141, 2765078298066978400951570461522 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A222878

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..27

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A287071 A224843 A033530 * A267720 A263299 A330202

Adjacent sequences:  A222873 A222874 A222875 * A222877 A222878 A222879

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 08 2013

STATUS

approved

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Last modified January 27 17:36 EST 2022. Contains 350611 sequences. (Running on oeis4.)