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A213469
Number of 0..3 arrays of length 2*n+4 with sum less than 3*n in any length 2n subsequence (=less than 50% duty cycle)
1
157, 7803, 191573, 3737885, 67329406, 1167362677, 19808276303, 331605526490, 5501075085468, 90671574326172, 1487390263956378, 24310876230706073, 396224883822318038, 6443121835406288422, 104579933906413425698
OFFSET
1,1
COMMENTS
Row 5 of A213464
LINKS
EXAMPLE
Some solutions for n=3
..0....0....2....2....2....0....0....0....0....0....2....0....0....0....0....0
..2....1....1....0....0....0....0....0....1....0....2....1....3....2....3....0
..3....1....3....2....1....2....0....1....0....3....1....2....1....0....1....1
..1....3....0....0....0....0....3....0....0....2....0....2....0....2....0....1
..0....0....0....0....0....1....2....1....1....0....1....0....1....1....0....0
..1....0....0....1....3....1....0....0....0....2....0....0....2....0....1....1
..1....0....2....1....1....0....0....2....1....1....0....1....0....2....1....1
..1....2....1....3....0....1....0....2....1....0....0....2....0....1....0....0
..2....0....1....2....0....2....0....0....3....0....0....0....2....0....0....1
..1....3....1....0....0....3....1....2....0....3....0....2....2....0....0....0
CROSSREFS
Sequence in context: A171345 A327849 A066823 * A074220 A015265 A260447
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 12 2012
STATUS
approved