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A236118 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the difference of the maximum and the upper median in each 2X2 subblock 6
256, 2248, 2248, 20000, 35468, 20000, 175096, 542140, 542140, 175096, 1538144, 8253392, 14423874, 8253392, 1538144, 13525664, 126117020, 375889812, 375889812, 126117020, 13525664, 118990080, 1934727612, 10125262296, 18228584298 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........256..........2248...........20000...........175096..........1538144

........2248.........35468..........542140..........8253392........126117020

.......20000........542140........14423874........375889812......10125262296

......175096.......8253392.......375889812......18228584298.....918481481856

.....1538144.....126117020.....10125262296.....918481481856...90225427419130

....13525664....1934727612....274910404616...47538640366310.9012213136881004

...118990080...29594969044...7486885637764.2439572433329864

..1045666976..452447788292.202400378694944

..9189157840.6920035929192

.80777516672

LINKS

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

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 18] for n>19

k=2: [order 84]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A207792 A236500 A236495 * A236113 A235521 A235652

Adjacent sequences:  A236115 A236116 A236117 * A236119 A236120 A236121

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 19 2014

STATUS

approved

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Last modified September 25 07:19 EDT 2022. Contains 356959 sequences. (Running on oeis4.)