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A222888 Number of nX5 0..2 arrays with exactly floor(nX5/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order 1
16, 1222, 138026, 24893100, 2737507523, 518031070610, 57938967907855, 11279149298276340, 1275220409032117490, 252490047545846068708, 28751346406380329048124, 5756690997936847064344575 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A222889

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A160131 A206691 A064346 * A113104 A227602 A186856

Adjacent sequences:  A222885 A222886 A222887 * A222889 A222890 A222891

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 08 2013

STATUS

approved

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Last modified January 19 17:26 EST 2022. Contains 350466 sequences. (Running on oeis4.)