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A249887 Number of length 4+6 0..n arrays with no seven consecutive terms having the maximum of any three terms equal to the minimum of the remaining four terms 1
35, 4019, 118638, 1599494, 12991337, 74439217, 331379292, 1219778604, 3872511183, 10923962159, 27981170954, 66148387890, 146141454485, 304712555117, 604328255416, 1147307969496, 2095939712763, 3700448828331 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A249883
LINKS
FORMULA
Empirical: a(n) = n^10 + (37/105)*n^9 + (363/70)*n^8 + (442/105)*n^7 + (917/90)*n^6 + (211/30)*n^5 + (149/90)*n^4 + (407/70)*n^3 - (167/315)*n^2 + (19/210)*n
EXAMPLE
Some solutions for n=3
..0....0....3....1....0....1....0....2....2....1....2....1....3....1....1....1
..1....2....1....0....1....0....0....2....1....1....1....0....0....3....0....2
..2....3....1....3....2....2....3....0....0....3....2....3....2....0....1....2
..3....1....3....0....0....3....1....2....0....0....0....2....0....3....3....1
..3....3....1....2....1....1....3....1....0....0....1....2....3....3....0....3
..1....0....2....0....3....3....2....0....2....0....3....3....2....3....3....2
..3....0....2....1....0....3....0....3....1....1....3....0....1....1....0....0
..3....2....2....2....0....0....0....0....2....1....3....0....0....0....1....1
..0....2....1....3....1....3....2....2....2....2....0....1....3....3....0....2
..1....2....1....3....1....1....0....2....0....2....3....2....0....1....3....2
CROSSREFS
Sequence in context: A201725 A202578 A213404 * A210314 A294851 A266053
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 07 2014
STATUS
approved

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Last modified May 23 05:11 EDT 2024. Contains 372758 sequences. (Running on oeis4.)