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A250341 Number of length 5+5 0..n arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms 1
272, 9771, 101264, 596245, 2506320, 8403783, 23943648, 60312393, 137935120, 291832739, 579084144, 1088915165, 1956006352, 3377685375, 5635747008, 9123724305, 14380518672, 22131384091, 33337351760, 49254275877, 71502779216 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A250336

LINKS

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

FORMULA

Empirical: a(n) = (1/105)*n^9 + (34/35)*n^8 + (25/2)*n^7 + 50*n^6 + 92*n^5 + (1384/15)*n^4 + (621/14)*n^3 - (173/21)*n^2 - (193/15)*n + 1

EXAMPLE

Some solutions for n=3

..3....2....0....1....0....1....0....1....0....2....2....3....1....2....3....0

..2....1....2....3....2....3....2....3....0....0....0....2....1....0....0....1

..0....2....2....1....1....1....3....2....2....3....0....2....1....2....1....0

..1....2....0....1....2....2....0....0....3....1....3....2....0....2....1....1

..3....2....1....1....2....3....2....2....0....1....2....2....3....0....1....0

..2....0....1....1....3....2....2....2....0....0....2....2....2....2....0....0

..2....2....1....0....2....2....2....3....0....2....2....3....0....2....2....0

..3....2....1....0....2....1....3....2....0....1....0....2....1....2....0....3

..2....1....3....1....3....2....1....2....3....1....1....3....1....3....1....0

..0....3....0....2....2....0....2....0....1....3....2....1....1....1....1....0

CROSSREFS

Sequence in context: A141546 A000517 A350975 * A168372 A023907 A281691

Adjacent sequences:  A250338 A250339 A250340 * A250342 A250343 A250344

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2014

STATUS

approved

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Last modified June 27 16:23 EDT 2022. Contains 354896 sequences. (Running on oeis4.)