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A236987 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal 8
256, 888, 888, 3000, 3852, 3000, 11388, 16212, 16212, 11388, 43096, 85064, 78976, 85064, 43096, 171036, 429108, 556322, 556322, 429108, 171036, 680872, 2380742, 3448154, 6304776, 3448154, 2380742, 680872, 2770540, 12891190, 26255552 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
......256........888........3000..........11388............43096
......888.......3852.......16212..........85064...........429108
.....3000......16212.......78976.........556322..........3448154
....11388......85064......556322........6304776.........59328026
....43096.....429108.....3448154.......59328026........759273578
...171036....2380742....26255552......750471960......15309352326
...680872...12891190...180781130.....8305755418.....246840494018
..2770540...73033832..1407433782...107840744274....5107452443634
.11314280..407662600.10159143566..1291740741806...92601167163795
.46745212.2333365070.79598995100.16958036927472.1917855806319638
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 37]
k=2: [order 92]
EXAMPLE
Some solutions for n=3 k=4
..0..2..2..2..2....0..3..1..3..2....0..2..2..0..3....0..2..0..1..1
..2..3..2..3..2....3..2..3..2..3....2..3..2..3..1....3..0..3..1..3
..1..2..1..2..2....3..2..3..2..3....2..2..2..1..3....1..1..1..1..0
..2..3..2..3..1....0..3..0..3..2....2..3..2..3..1....3..1..3..1..3
CROSSREFS
Sequence in context: A253822 A258733 A209381 * A236980 A224975 A237090
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 02 2014
STATUS
approved

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Last modified July 25 09:55 EDT 2024. Contains 374587 sequences. (Running on oeis4.)