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A219306 Unchanging value maps: number of nX4 binary arrays indicating the locations of corresponding elements unequal to no horizontal or vertical neighbor in a random 0..2 nX4 array 1
7, 51, 423, 3334, 25647, 200376, 1574278, 12334824, 96480571, 755212375, 5914093280, 46306103745, 362524633360, 2838264260603, 22221912955624, 173982894127917, 1362160216940837, 10664747935404835, 83497581682654109 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A219310

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..48

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A222849 A273055 A019472 * A246572 A230883 A304939

Adjacent sequences:  A219303 A219304 A219305 * A219307 A219308 A219309

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 17 2012

STATUS

approved

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Last modified June 14 12:04 EDT 2021. Contains 345025 sequences. (Running on oeis4.)