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A236035 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock 8
81, 384, 384, 1848, 2460, 1848, 8856, 14980, 14980, 8856, 42724, 93640, 116786, 93640, 42724, 205660, 595416, 965344, 965344, 595416, 205660, 990076, 3752292, 8289258, 11384132, 8289258, 3752292, 990076, 4760380, 23516900, 68613596 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
........81........384.........1848...........8856............42724
.......384.......2460........14980..........93640...........595416
......1848......14980.......116786.........965344..........8289258
......8856......93640.......965344.......11384132........135945364
.....42724.....595416......8289258......135945364.......2282216166
....205660....3752292.....68613596.....1562942580......36483535032
....990076...23516900....570818506....18041076392.....590896758666
...4760380..147865936...4747089488...210792493144....9608835890536
..22914572..931263424..39848021722..2453096266960..156707889598596
.110251484.5858644440.330427763000.28456755301120.2530161441550248
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 10]
k=2: [order 19]
k=3: [order 92] for n>95
EXAMPLE
Some solutions for n=3 k=4
..0..1..1..2..2....0..2..1..2..1....0..1..1..2..2....0..0..1..1..2
..0..1..0..0..2....0..2..1..0..2....0..2..1..2..2....0..1..0..1..2
..0..0..2..0..1....1..0..1..0..0....2..2..0..1..0....2..2..1..0..1
..1..1..1..0..0....0..0..2..1..2....0..0..0..1..1....0..2..1..2..0
CROSSREFS
Sequence in context: A205909 A237843 A205737 * A236028 A233157 A237108
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 18 2014
STATUS
approved

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Last modified June 21 14:35 EDT 2024. Contains 373547 sequences. (Running on oeis4.)