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A220581 Equals one maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 3Xn array 1
1, 32, 91, 1441, 8334, 64497, 436288, 3036588, 21023792, 146254012, 1011489196, 7016643627, 48603225482, 336693889957, 2332461879768, 16156948253940, 111913294295697, 775187951935208, 5369332881497134, 37190288381188178 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 3 of A220579

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A318073 A279713 A228801 * A297730 A124804 A188184

Adjacent sequences: A220578 A220579 A220580 * A220582 A220583 A220584

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 16 2012

STATUS

approved

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Last modified November 28 17:22 EST 2022. Contains 358421 sequences. (Running on oeis4.)