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A228974 Number of nX4 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)X5 0..2 array. 0
81, 6387, 485397, 32175213, 2056956837, 129504297807, 8110003331559, 506820492353703, 31647512289810393, 1975556815959556587, 123306671912401161489 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A228977.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A205887 A205199 A250612 * A178513 A016948 A206993

Adjacent sequences:  A228971 A228972 A228973 * A228975 A228976 A228977

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 10 2013

STATUS

approved

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Last modified October 16 12:47 EDT 2021. Contains 348041 sequences. (Running on oeis4.)