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A249215
Number of length 3+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five
0
496, 11874, 183516, 1287632, 6631348, 26526142, 89437990, 259680594, 678836386, 1608960332, 3563385010, 7370543098, 14518880248, 27241408064, 49261449504, 85646747520, 144718409622, 237078221134
OFFSET
1,1
COMMENTS
Row 3 of A249212
EXAMPLE
Some solutions for n=3
..0....2....0....2....0....2....0....2....0....2....2....0....2....0....2....2
..2....1....0....3....0....2....2....1....3....2....1....3....2....0....0....1
..0....2....0....3....2....3....1....0....1....3....2....1....2....2....1....3
..1....0....1....0....3....3....3....1....1....3....3....0....3....0....1....1
..0....0....3....0....3....1....2....0....1....3....0....1....1....1....0....0
..0....0....2....3....1....2....2....0....2....1....1....3....1....1....3....2
..2....3....2....3....0....0....2....1....2....3....2....3....1....2....3....1
..0....0....0....0....0....0....1....2....0....1....2....2....1....0....2....3
..1....0....2....0....2....0....2....0....3....3....1....1....2....2....2....3
CROSSREFS
Sequence in context: A349699 A303623 A249200 * A249322 A110847 A160472
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 23 2014
STATUS
approved