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A237488 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock equal 7
256, 1464, 1464, 8770, 15898, 8770, 55318, 180730, 180730, 55318, 357516, 2218016, 3903294, 2218016, 357516, 2371070, 27849668, 92508252, 92508252, 27849668, 2371070, 15989568, 361041844, 2218452183, 4269381134, 2218452183, 361041844 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......256.........1464............8770..............55318...............357516

......1464........15898..........180730............2218016.............27849668

......8770.......180730.........3903294...........92508252...........2218452183

.....55318......2218016........92508252.........4269381134.........195900496272

....357516.....27849668......2218452183.......195900496272.......16931153946501

...2371070....361041844.....54882960676......9290034002140.....1516655769265371

..15989568...4724446414...1356262078497....435555926502332...133299196435954608

.109427750..62643477220..33916082423836..20718223122880912.11926329656540065908

.756426182.833223795952.845731963650019.977441661859620206

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 30]

k=2: [order 88]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A237219 A237951 A237946 * A237482 A237150 A237143

Adjacent sequences:  A237485 A237486 A237487 * A237489 A237490 A237491

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 08 2014

STATUS

approved

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Last modified August 19 20:38 EDT 2022. Contains 356231 sequences. (Running on oeis4.)