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A233803
Number of (2+2) X (n+2) 0..3 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards.
1
7959956, 1231134446, 192011782168, 29957246808751, 4668375990645847, 727613390704042525, 113382378138032185191, 17668628991719709583658, 2753265874450249736710283, 429037614663717954349428385
OFFSET
1,1
COMMENTS
Row 2 of A233801.
LINKS
EXAMPLE
Some solutions for n=1
..1..0..1....0..0..0....0..0..1....0..0..1....0..0..1....0..0..0....1..0..0
..1..2..1....1..1..3....1..0..0....0..3..0....0..2..1....0..1..0....0..2..1
..1..2..1....1..0..2....0..0..3....3..0..1....2..2..3....0..0..0....0..0..1
..2..2..2....1..2..1....0..3..0....0..2..0....2..2..0....2..1..3....2..3..3
CROSSREFS
Cf. A233801.
Sequence in context: A360905 A233797 A203504 * A204970 A185929 A268334
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2013
STATUS
approved