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A250159 Number of length 5+6 0..n arrays with every seven consecutive terms having the maximum of some two terms equal to the minimum of the remaining five terms 1
1212, 50228, 721644, 5682771, 30540568, 126272510, 431428872, 1275205749, 3363667972, 8094090840, 18057831188, 37810573671, 75010469184, 142049830978, 258334922192, 453401198121, 771088399500, 1275041371324, 2055848647164 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A250154

LINKS

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

FORMULA

Empirical: a(n) = (1/15)*n^10 + (13/4)*n^9 + (2455/84)*n^8 + (722/7)*n^7 + 194*n^6 + (15671/60)*n^5 + (3617/12)*n^4 + 236*n^3 + (16861/210)*n^2 + (509/210)*n + 1

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

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

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

..0....0....0....0....1....1....1....0....1....0....1....1....1....1....1....1

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

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

CROSSREFS

Sequence in context: A204332 A203661 A203657 * A184464 A204331 A105311

Adjacent sequences:  A250156 A250157 A250158 * A250160 A250161 A250162

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 13 2014

STATUS

approved

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Last modified October 28 13:26 EDT 2021. Contains 348329 sequences. (Running on oeis4.)