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A231139 Number of (n+1) X (2+1) 0..2 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with upper left element zero. 1
100, 1470, 22870, 352444, 5441634, 83985430, 1296319964, 20008457170, 308827818618, 4766712219328, 73573516286674, 1135596590433446, 17527769351000652, 270538587942685474, 4175724025042070130 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A231144.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 14*a(n-1) +28*a(n-2) -83*a(n-3) -92*a(n-4) -342*a(n-5) +134*a(n-6) +890*a(n-7) +432*a(n-8) -32*a(n-9) +80*a(n-10) -320*a(n-11).

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Cf. A231144.

Sequence in context: A167043 A274943 A203283 * A295589 A114777 A128988

Adjacent sequences:  A231136 A231137 A231138 * A231140 A231141 A231142

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2013

STATUS

approved

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Last modified October 16 13:06 EDT 2021. Contains 348041 sequences. (Running on oeis4.)