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A251804 Number of (4+1)X(n+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01 1
216912, 18577404, 873945739, 26787273856, 594938582014, 10280556043804, 145329837643171, 1743692215971208, 18257820090771490, 170475350875241504, 1443843489205389919, 11245777833263175252, 81459269805049215890 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A251801
LINKS
FORMULA
Empirical recurrence of order 52 (see link above)
EXAMPLE
Some solutions for n=1
..0..0....0..1....0..2....2..2....2..2....2..3....0..2....0..3....0..2....0..2
..1..1....2..3....1..0....0..2....2..3....2..3....2..3....3..2....0..2....1..1
..2..3....3..3....0..1....0..0....3..2....0..2....0..3....0..1....0..3....3..3
..0..2....2..3....0..3....3..3....2..3....0..0....1..1....0..3....3..1....2..2
..2..0....0..2....1..0....3..3....0..1....0..0....0..2....3..2....0..2....3..3
CROSSREFS
Sequence in context: A203730 A273219 A351662 * A184668 A077640 A188347
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved

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Last modified March 1 22:23 EST 2024. Contains 370443 sequences. (Running on oeis4.)