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A250087
Number of length 6+5 0..n arrays with every six consecutive terms having the maximum of some two terms equal to the minimum of the remaining four terms
1
774, 25659, 315376, 2170435, 10384566, 38804209, 121263104, 330977421, 812445670, 1830978831, 3846189744, 7617096799, 14347945366, 25885421205, 44979623296, 75622979129, 123483223494, 196448622211, 305305805040
OFFSET
1,1
COMMENTS
Row 6 of A250081
LINKS
FORMULA
Empirical: a(n) = (85/252)*n^9 + (1445/168)*n^8 + (347/7)*n^7 + (361/3)*n^6 + (631/4)*n^5 + (3775/24)*n^4 + (9602/63)*n^3 + (8381/84)*n^2 + (377/14)*n + 1
EXAMPLE
Some solutions for n=2
..2....2....0....2....1....2....2....1....1....0....2....1....1....2....1....1
..1....0....1....0....1....1....1....0....2....2....0....0....1....2....2....0
..0....1....1....1....0....1....1....2....0....1....0....2....0....1....1....0
..1....0....0....1....0....1....0....2....0....0....0....2....1....0....2....1
..0....1....0....1....2....1....0....1....1....1....0....0....1....0....0....1
..0....0....1....1....0....0....0....1....0....0....2....0....1....0....2....0
..2....0....0....2....1....1....0....1....2....0....0....0....1....0....1....2
..2....0....2....2....0....2....2....1....1....1....0....2....1....0....1....0
..0....0....2....2....2....2....1....0....0....0....0....2....0....1....1....0
..0....0....0....0....0....2....2....2....0....0....1....0....2....0....1....0
..1....2....0....1....2....1....0....1....2....2....2....0....1....1....2....0
CROSSREFS
Sequence in context: A255156 A365597 A233991 * A252673 A077077 A177845
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 11 2014
STATUS
approved