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A237544 T(n,k)=Number of (n+1)X(k+1) 0..3 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 6
256, 1888, 1888, 14208, 25280, 14208, 106496, 344128, 344128, 106496, 798208, 4672896, 8541016, 4672896, 798208, 5985280, 63456608, 211030720, 211030720, 63456608, 5985280, 44879872, 862467040, 5218152940, 9482488816, 5218152940 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........256..........1888..........14208..........106496...........798208

........1888.........25280.........344128.........4672896.........63456608

.......14208........344128........8541016.......211030720.......5218152940

......106496.......4672896......211030720......9482488816.....426554989880

......798208......63456608.....5218152940....426554989880...34922994091800

.....5985280.....862467040...129193956304..19222160100656.2865493204313080

....44879872...11715351424..3195177788984.864777814816088

...336408576..159023453952.78931540544960

..2521595904.2159737999232

.18907365376

LINKS

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

FORMULA

Empirical for column k:

k=1: a(n) = 3120*a(n-4) +121600*a(n-8) +4931584*a(n-12) -10485760*a(n-16) for n>17

k=2: [order 48] for n>50

EXAMPLE

Some solutions for n=2 k=4

..0..0..0..2..2....0..2..2..0..2....2..0..2..2..0....0..0..2..0..0

..1..1..0..2..1....3..0..0..1..1....3..0..0..3..3....1..1..0..0..1

..0..1..0..1..2....0..3..2..3..0....0..1..2..1..2....1..2..1..2..3

CROSSREFS

Sequence in context: A237151 A237574 A237569 * A206752 A237539 A206745

Adjacent sequences: A237541 A237542 A237543 * A237545 A237546 A237547

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 09 2014

STATUS

approved

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Last modified January 28 02:10 EST 2023. Contains 359849 sequences. (Running on oeis4.)