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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A250081

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

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: A055521 A255156 A233991 * A252673 A077077 A177845

Adjacent sequences:  A250084 A250085 A250086 * A250088 A250089 A250090

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 11 2014

STATUS

approved

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Last modified December 15 15:10 EST 2019. Contains 329999 sequences. (Running on oeis4.)