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A234395
Number of (2+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally or diagonally downwards
1
9292808, 1687142836, 312048302829, 57796098504371, 10689939176311218, 1976898869137875008, 365629104612615854980, 67624525811802767580890, 12507319228907396001450322, 2313255231517134891957912331
OFFSET
1,1
COMMENTS
Row 2 of A234393
FORMULA
Empirical recurrence of order 85 (see link above)
EXAMPLE
Some solutions for n=1
..0..0..1....0..0..0....0..0..1....1..0..1....0..0..0....0..0..0....1..0..0
..0..0..3....0..0..2....0..0..2....0..1..0....0..0..3....0..0..3....0..0..2
..1..0..0....3..0..2....0..1..1....1..1..3....3..0..0....3..1..3....3..0..0
..1..2..3....0..1..1....3..0..0....1..1..1....2..0..2....1..1..0....3..2..1
CROSSREFS
Sequence in context: A105175 A212469 A251280 * A204510 A328207 A069376
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 25 2013
STATUS
approved