A237404 - OEIS

A237404

Number of (n+1) X (n+1) 0..2 arrays with the maximum plus the upper median plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

81, 1632, 53167, 3604930, 480758688, 101410470742, 36546653191142, 26246859602932048

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OFFSET

1,1

COMMENTS

Diagonal of A237412.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A223279 A096302 A297681 * A237549 A107914 A050634

Adjacent sequences: A237401 A237402 A237403 * A237405 A237406 A237407

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 07 2014

STATUS

approved