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A228979 Number of n X n 0..1 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..1 array. 0
2, 16, 512, 56472, 20729216, 25205141664, 102496979446048, 1399175578116323192, 64226272780209688718776 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A228986.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A267728 A063387 A326251 * A293150 A286039 A063391

Adjacent sequences:  A228976 A228977 A228978 * A228980 A228981 A228982

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 10 2013

STATUS

approved

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Last modified October 16 12:23 EDT 2021. Contains 348041 sequences. (Running on oeis4.)