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A248467
Number of length 6+2 0..n arrays with no three consecutive terms having the sum of any two elements equal to twice the third
1
68, 576, 14040, 96736, 520788, 1952254, 6493036, 17917712, 45541888, 102869198, 219106196, 433633802, 820820502, 1471721904, 2552955354, 4256615846, 6910769098, 10880058248, 16766422418, 25217401274, 37267800170, 53987521754
OFFSET
1,1
COMMENTS
Row 6 of A248461
LINKS
EXAMPLE
Some solutions for n=4
..2....1....3....0....3....2....3....1....0....4....4....4....2....1....4....3
..3....0....0....0....4....3....1....1....0....0....3....0....4....3....0....2
..2....3....4....2....1....3....1....3....4....4....3....3....2....3....1....0
..0....0....3....0....1....0....0....4....4....1....1....4....4....0....1....0
..2....3....3....3....0....0....3....0....0....4....4....4....4....2....2....3
..3....4....0....1....1....1....4....1....0....1....0....3....1....2....4....1
..3....0....0....4....1....3....4....3....3....3....1....0....1....0....2....0
..1....0....2....3....2....1....2....0....4....3....1....0....3....0....1....4
CROSSREFS
Sequence in context: A211691 A027850 A372401 * A281565 A281883 A282333
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 06 2014
STATUS
approved