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A249199
Number of length 2+6 0..n arrays with no seven consecutive terms having four times the sum of any three elements equal to three times the sum of the remaining four
1
250, 4586, 49730, 290032, 1249890, 4264120, 12523980, 32265528, 75291612, 161899248, 326111182, 620196140, 1126624828, 1965081086, 3308353438, 5396340806, 8563365532, 13250164542, 20059918926, 29755741666, 43364729550
OFFSET
1,1
COMMENTS
Row 2 of A249197
LINKS
EXAMPLE
Some solutions for n=3
..0....1....1....3....3....3....2....2....3....1....3....2....0....2....2....1
..1....2....3....2....3....1....0....0....0....1....2....1....3....2....2....3
..3....1....2....1....3....2....1....0....3....2....2....0....2....0....0....0
..3....2....3....0....3....1....1....2....0....2....2....3....0....1....3....3
..0....0....2....1....2....3....2....0....1....0....3....1....0....0....0....0
..2....1....0....3....0....3....3....3....2....0....2....2....0....1....3....1
..3....3....0....2....2....2....3....1....1....3....1....1....1....0....1....0
..1....2....1....0....2....1....1....2....2....0....3....2....2....1....2....3
CROSSREFS
Sequence in context: A122270 A234497 A234491 * A249214 A249321 A109121
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 23 2014
STATUS
approved