Voozh

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.

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: A316927 A004246 A362276 * A060718 A060743 A029617

Adjacent sequences: A220532 A220533 A220534 * A220536 A220537 A220538

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 15 2012

STATUS

approved

URL: https://oeis.org/A220535

⇱ A220535 - OEIS