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A236142 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock 4
256, 2976, 2976, 34734, 79260, 34734, 405132, 2113860, 2113860, 405132, 4726586, 56388240, 129107036, 56388240, 4726586, 55128306, 1503850638, 7882228972, 7882228972, 1503850638, 55128306, 643062117, 40110759152, 481223530251 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
........256..........2976..........34734..........405132.........4726586
.......2976.........79260........2113860........56388240......1503850638
......34734.......2113860......129107036......7882228972....481223530251
.....405132......56388240.....7882228972...1102150639440.154055073024272
....4726586....1503850638...481223530251.154055073024272
...55128306...40110759152.29382547744580
..643062117.1069867016024
.7501428048
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 39]
EXAMPLE
Some solutions for n=2 k=4
..0..0..0..2..0....0..0..3..0..0....0..0..1..3..3....0..0..2..1..2
..0..0..2..1..3....0..0..3..1..0....0..1..0..0..0....0..1..0..1..1
..0..3..0..3..2....0..1..3..3..3....0..2..3..0..0....0..2..3..3..1
CROSSREFS
Sequence in context: A236195 A236592 A236589 * A236139 A235747 A235506
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 19 2014
STATUS
approved

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)