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A220388 Majority value maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 3Xn array 1
1, 21, 136, 757, 5114, 33247, 211944, 1358599, 8710809, 55837516, 357929465, 2294335738, 14706528192, 94267737477, 604248583206, 3873181842138, 24826757202429, 159137319721129, 1020056076249840, 6538468564699587 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 3 of A220386

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..67

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A125331 A126489 A033595 * A220151 A337899 A200987

Adjacent sequences: A220385 A220386 A220387 * A220389 A220390 A220391

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 13 2012

STATUS

approved

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Last modified January 31 15:41 EST 2023. Contains 359976 sequences. (Running on oeis4.)