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A228973 Number of nX3 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)X4 0..2 array. 1
27, 729, 19503, 485397, 11824875, 284888979, 6833010879, 163568332743, 3912114851403, 93531877981317, 2235810654452229, 53441462708600373, 1277342856184156383, 30530250826564614987, 729710332031305316823 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A228977.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A167726 A268022 A223571 * A171301 A098838 A268015

Adjacent sequences:  A228970 A228971 A228972 * A228974 A228975 A228976

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 10 2013

STATUS

approved

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Last modified November 29 18:41 EST 2021. Contains 349416 sequences. (Running on oeis4.)