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A237380 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
6368, 76188, 912912, 11767448, 141627680, 1709556016, 20834106592, 274803913264, 3352960252480, 40937682523424, 504525820605504, 6765320207408288, 83335893079026048, 1025439716821228992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A237384

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 68874*a(n-4) -1534369644*a(n-8) +10903411963960*a(n-12) -44879816417664*a(n-16) for n>20

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A292040 A203044 A105009 * A251406 A278187 A206125

Adjacent sequences:  A237377 A237378 A237379 * A237381 A237382 A237383

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 07 2014

STATUS

approved

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Last modified May 20 05:02 EDT 2022. Contains 353851 sequences. (Running on oeis4.)