[go: up one dir, main page]

login
A237294
Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock equal
1
1128, 7544, 56752, 471588, 4167736, 38817072, 375021656, 3729166264, 37856371660, 390487433404, 4075963878136, 42940176794836, 455574781777652, 4860153197230628, 52070924104772852, 559748945641992408
OFFSET
1,1
COMMENTS
Column 2 of A237299
FORMULA
Empirical recurrence of order 53 (see link above)
EXAMPLE
Some solutions for n=3
..2..1..0....1..2..1....2..3..1....2..1..3....0..0..1....1..1..0....3..1..2
..0..0..2....2..1..2....3..3..2....2..3..1....2..2..3....2..3..1....1..0..0
..0..1..0....0..1..0....2..3..3....2..3..1....1..3..2....0..0..1....1..3..2
..0..0..0....0..1..2....0..2..3....1..2..0....3..1..0....1..0..0....1..2..2
CROSSREFS
Sequence in context: A203830 A252299 A203063 * A307174 A278732 A278434
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2014
STATUS
approved