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A237956 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the lower median plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 5
256, 1280, 1280, 6400, 7552, 6400, 34560, 45504, 45504, 34560, 186624, 300576, 336260, 300576, 186624, 1022976, 1989792, 2763512, 2763512, 1989792, 1022976, 5607424, 13448144, 22791116, 28736144, 22791116, 13448144, 5607424, 30916608 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......256.......1280........6400.......34560......186624.....1022976

......1280.......7552.......45504......300576.....1989792....13448144

......6400......45504......336260.....2763512....22791116...192579544

.....34560.....300576.....2763512....28736144...300240232..3226849976

....186624....1989792....22791116...300240232..3981595988.54495006024

...1022976...13448144...192579544..3226849976.54495006024

...5607424...90873216..1628588344.34742206136

..30916608..619311968.13907568992

.170459136.4216944960

.939196416

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

FORMULA

Empirical for column k:

k=1: a(n) = 976*a(n-4) -46848*a(n-8) +110592*a(n-12)

k=2: [order 44] for n>46

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A237000 A236979 A236973 * A237241 A120054 A237952

Adjacent sequences:  A237953 A237954 A237955 * A237957 A237958 A237959

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 16 2014

STATUS

approved

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Last modified August 8 17:55 EDT 2022. Contains 356016 sequences. (Running on oeis4.)