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A236704
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median of every 2X2 subblock
7
81, 426, 426, 2285, 3188, 2285, 12076, 23788, 23788, 12076, 64277, 178232, 259396, 178232, 64277, 340944, 1338314, 2832926, 2832926, 1338314, 340944, 1814328, 10041714, 31409880, 46692992, 31409880, 10041714, 1814328, 9631020, 75235940
OFFSET
1,1
COMMENTS
Table starts
........81.........426..........2285..........12076...........64277
.......426........3188.........23788.........178232.........1338314
......2285.......23788........259396........2832926........31409880
.....12076......178232.......2832926.......46692992.......775050154
.....64277.....1338314......31409880......775050154.....19605710895
....340944....10041714.....343725916....12823407292....488730626484
...1814328....75235940....3791095422...211713828688..12281928596332
...9631020...563994510...41527455416..3511115688000.307621332573176
..51194672..4230366698..459098074574.58239156471582
.271870052.31726827262.5029066110784
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 13]
k=2: [order 36] for n>37
EXAMPLE
Some solutions for n=2 k=4
..1..0..1..0..1....0..2..0..2..2....1..2..0..0..1....0..0..0..2..2
..0..2..1..1..0....1..1..2..0..1....0..0..0..0..0....2..2..0..2..0
..0..2..0..0..2....1..0..1..2..1....0..2..2..0..0....2..2..1..1..0
CROSSREFS
Sequence in context: A238173 A206407 A236610 * A236604 A236698 A235421
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 30 2014
STATUS
approved