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A236651 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock 6
81, 484, 484, 2932, 4500, 2932, 17824, 41980, 41980, 17824, 108272, 394380, 608656, 394380, 108272, 655100, 3668492, 8891884, 8891884, 3668492, 655100, 3970468, 34234336, 128476048, 204824360, 128476048, 34234336, 3970468, 24093844 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........81.........484.........2932.........17824........108272........655100

.......484........4500........41980........394380.......3668492......34234336

......2932.......41980.......608656.......8891884.....128476048....1869749396

.....17824......394380......8891884.....204824360....4639468308..106762847796

....108272.....3668492....128476048....4639468308..164401921546.5963465890608

....655100....34234336...1869749396..106762847796.5963465890608

...3970468...319904840..27242456824.2451445050484

..24093844..2991463632.396368005036

.146112996.27901011760

.885471428

LINKS

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

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 11]

k=2: [order 38] for n>39

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A253400 A250620 A237082 * A295018 A250613 A237077

Adjacent sequences:  A236648 A236649 A236650 * A236652 A236653 A236654

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 29 2014

STATUS

approved

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Last modified August 11 19:26 EDT 2022. Contains 356066 sequences. (Running on oeis4.)