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A220535 Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 nX4 array 0
8, 25, 625, 6620, 67729, 686206, 7024942, 72007269, 739028492, 7580428560, 77728750356, 797017436103, 8172940998884 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A220537

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A305680 A316927 A004246 * A060718 A060743 A029617

Adjacent sequences:  A220532 A220533 A220534 * A220536 A220537 A220538

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 15 2012

STATUS

approved

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Last modified December 7 13:08 EST 2021. Contains 349581 sequences. (Running on oeis4.)