A237455 - OEIS

A237455

Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

81, 1376, 27915, 594190, 14411725, 459648432, 15211412806, 474413628922, 17502385423626

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OFFSET

1,1

COMMENTS

Diagonal of A237463

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A231912 A382388 A116205 * A253488 A236738 A236801

Adjacent sequences: A237452 A237453 A237454 * A237456 A237457 A237458

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 08 2014

STATUS

approved