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A237299 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock equal 7
256, 1128, 1128, 5360, 7544, 5360, 27376, 56752, 56752, 27376, 145488, 471588, 685244, 471588, 145488, 802992, 4167736, 9292680, 9292680, 4167736, 802992, 4552384, 38817072, 134597244, 205544096, 134597244, 38817072, 4552384 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......256.........1128............5360.............27376...............145488

......1128.........7544...........56752............471588..............4167736

......5360........56752..........685244...........9292680............134597244

.....27376.......471588.........9292680.........205544096...........4821666340

....145488......4167736.......134597244........4821666340.........181211467948

....802992.....38817072......2051387740......118567856892........7117073796344

...4552384....375021656.....32420171928.....3028672538964......291062464483036

..26458368...3729166264....527547020504....80031975760432....12383494364753228

.156639808..37856371660...8787002245648..2178875438380620...546793895792910920

.942349824.390487433404.149199162038628.60875277529034968.24967144157622737956

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..111

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 21]

k=2: [order 53]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A237212 A237694 A237688 * A237293 A206118 A206111

Adjacent sequences:  A237296 A237297 A237298 * A237300 A237301 A237302

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 06 2014

STATUS

approved

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Last modified June 5 09:32 EDT 2020. Contains 334829 sequences. (Running on oeis4.)