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A250504 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with nondecreasing medians of every three consecutive values in every row and column 9
512, 2744, 2744, 13824, 23096, 13824, 68921, 181058, 181058, 68921, 314432, 1410255, 2191444, 1410255, 314432, 1367631, 9788132, 26447174, 26447174, 9788132, 1367631, 5832000, 64023155, 277462074, 495646476, 277462074, 64023155 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.......512........2744..........13824............68921.............314432
......2744.......23096.........181058..........1410255............9788132
.....13824......181058........2191444.........26447174..........277462074
.....68921.....1410255.......26447174........495646476.........7889877354
....314432.....9788132......277462074.......7889877354.......186246385700
...1367631....64023155.....2714800972.....116007921130......4025873039451
...5832000...409593826....25923074842....1660639294043.....84585014175864
..24137569..2524591167...236790657881...22580651735877...1677376060977244
..97336000.15066718470..2082074710650..293919481919578..31689420451649234
.385828352.88100873940.17883220315081.3726137451883967.581741448021499576
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 40]
EXAMPLE
Some solutions for n=2 k=4
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..1..0....0..0..0..0..0..0
..0..0..0..1..1..1....0..0..0..0..0..0....0..1..0..0..0..0....0..0..0..0..0..0
..1..1..1..0..1..1....1..1..1..1..1..1....1..0..0..0..0..1....1..1..1..0..1..1
..0..1..0..0..0..0....1..1..1..1..1..1....1..0..1..1..1..1....0..0..1..0..0..0
CROSSREFS
Sequence in context: A258910 A253986 A250826 * A250820 A250497 A254260
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 24 2014
STATUS
approved

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Last modified May 20 06:19 EDT 2024. Contains 372703 sequences. (Running on oeis4.)