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A250378
Number of length 5+6 0..n arrays with every seven consecutive terms having the maximum of some three terms equal to the minimum of the remaining four terms
1
714, 39471, 584904, 4530981, 23761098, 95876627, 320301600, 927689769, 2402475802, 5685632535, 12493324680, 25797289869, 50524534074, 94547403963, 170050397312, 295377297873, 497481476778, 815123592319, 1302984547464
OFFSET
1,1
COMMENTS
Row 5 of A250373
LINKS
FORMULA
Empirical: a(n) = (1/35)*n^10 + (85/42)*n^9 + (317/14)*n^8 + (635/7)*n^7 + (1821/10)*n^6 + (6353/30)*n^5 + (956/7)*n^4 + (253/7)*n^3 + (513/35)*n^2 + (1717/105)*n + 1
EXAMPLE
Some solutions for n=2
..1....2....0....1....0....1....0....0....1....1....2....0....1....1....2....1
..1....1....1....2....0....1....1....2....1....1....0....0....2....1....1....1
..1....2....0....2....0....2....1....2....2....2....2....2....1....2....1....0
..1....2....0....1....2....1....2....1....2....1....0....1....2....2....0....1
..1....1....0....1....0....2....0....1....0....1....0....2....1....1....2....1
..2....0....1....1....1....2....2....1....1....0....0....1....0....0....1....2
..1....1....0....2....2....1....2....1....1....2....0....2....2....1....1....2
..1....2....2....0....0....1....0....0....1....0....0....1....1....1....2....1
..0....1....2....1....0....0....1....2....1....2....0....0....1....1....2....0
..2....2....0....2....0....1....1....0....0....1....1....0....2....2....0....1
..1....2....0....0....0....0....1....2....2....1....0....1....1....2....1....0
CROSSREFS
Sequence in context: A360358 A166841 A166829 * A005467 A214186 A255788
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 19 2014
STATUS
approved