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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
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 08 2014
STATUS
approved