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A229513 Number of n X n 0..2 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..2 array without adjacent equal elements in the latter. 0
3, 33, 775, 34151, 3336437, 701321971, 329002027139, 336641338602285, 765068159631612145 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A229521.

LINKS

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

EXAMPLE

Some solutions for n=3:

  1 1 0   2 0 1   1 1 2   1 0 2   1 1 1   1 1 0   1 2 1

  2 0 2   0 1 0   0 1 0   1 1 0   1 1 1   2 0 2   2 1 1

  0 2 0   1 1 1   1 1 1   1 1 1   1 2 1   1 2 0   1 2 1

CROSSREFS

Cf. A229521.

Sequence in context: A003715 A247030 A009690 * A210833 A174488 A289695

Adjacent sequences:  A229510 A229511 A229512 * A229514 A229515 A229516

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 25 2013

STATUS

approved

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Last modified January 22 05:19 EST 2022. Contains 350481 sequences. (Running on oeis4.)