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A236657 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the sum of the upper and lower median values of each 2X2 subblock 4
256, 2896, 2896, 32424, 70896, 32424, 370352, 1680044, 1680044, 370352, 4235056, 41161740, 81224020, 41161740, 4235056, 48229536, 1012773632, 4119658692, 4119658692, 1012773632, 48229536, 549313480, 24759554960, 211585138552 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
........256.........2896..........32424.........370352........4235056
.......2896........70896........1680044.......41161740.....1012773632
......32424......1680044.......81224020.....4119658692...211585138552
.....370352.....41161740.....4119658692...443919273624.48580188585040
....4235056...1012773632...211585138552.48580188585040
...48229536..24759554960.10762574556276
..549313480.605124123248
.6261494544
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 18]
EXAMPLE
Some solutions for n=2 k=4
..0..0..1..0..0....0..0..2..3..2....0..0..3..1..2....0..0..3..1..1
..1..0..2..1..2....1..0..1..0..3....0..0..3..3..0....0..1..3..3..1
..1..0..0..2..3....1..0..0..1..3....1..1..1..2..2....0..1..0..0..3
CROSSREFS
Sequence in context: A235574 A235824 A235582 * A235579 A236654 A236198
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 29 2014
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)