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A236993 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
7200, 104976, 1513728, 23825664, 363916800, 5454273024, 80675315712, 1304215105536, 20389194547200, 312112856088576, 4707004466331648, 77333727580913664, 1227558957731020800, 19065730298005684224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A236997

LINKS

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

FORMULA

Empirical: a(n) = 158112*a(n-4) -7941224448*a(n-8) +124128835928064*a(n-12)

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A035906 A190114 A239566 * A218513 A181259 A250054

Adjacent sequences:  A236990 A236991 A236992 * A236994 A236995 A236996

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 02 2014

STATUS

approved

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Last modified October 21 04:00 EDT 2021. Contains 348141 sequences. (Running on oeis4.)