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A250019 Number of length 5+5 0..n arrays with no six consecutive terms having the maximum of any three terms equal to the minimum of the remaining three terms 1
20, 2864, 93384, 1332504, 11215276, 65834856, 298220320, 1112201376, 3567226068, 10145447312, 26161729352, 62193634776, 138055565388, 289022674792, 575229575808, 1095429860608, 2006608664532, 3551295564720, 6094832640776 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A250014

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..56

FORMULA

Empirical: a(n) = n^10 - (41/105)*n^9 + (883/168)*n^8 + (3/70)*n^7 + (593/60)*n^6 + (7/8)*n^4 + (1741/210)*n^3 - (491/70)*n^2 + (72/35)*n

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A064878 A222943 A222750 * A145405 A028458 A225989

Adjacent sequences:  A250016 A250017 A250018 * A250020 A250021 A250022

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 10 2014

STATUS

approved

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Last modified April 14 22:47 EDT 2021. Contains 342971 sequences. (Running on oeis4.)