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A244696 Number of length n+4 0..4 arrays with no five consecutive elements with pattern ababa or abbba (with a!=b) and new values 0..4 introduced in 0..4 order 1
50, 191, 801, 3582, 16673, 79535, 384984, 1879575, 9222654, 45385845, 223728645, 1103952328, 5450384180, 26918312059, 132969494589, 656908143379, 3245528085657, 16035496065995, 79229859441587, 391472138972739 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A244702
LINKS
FORMULA
Empirical: a(n) = 8*a(n-1) -14*a(n-2) -9*a(n-3) +15*a(n-4) +7*a(n-5) +22*a(n-6) -9*a(n-7) +9*a(n-8) +13*a(n-9) -9*a(n-10) -17*a(n-12) -5*a(n-14) -6*a(n-15) -a(n-16) -3*a(n-17) +a(n-18) -a(n-19)
EXAMPLE
Some solutions for n=6
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..1....0....0....1....1....1....1....1....1....1....1....1....1....1....1....1
..2....0....0....2....0....2....2....0....2....1....2....1....2....0....2....1
..3....1....1....2....2....1....3....0....3....2....2....0....1....1....1....2
..1....1....2....2....3....3....2....0....3....3....1....2....3....2....0....2
..1....0....2....2....0....4....0....2....4....4....1....1....4....3....2....3
..0....0....0....0....0....1....3....2....0....4....2....0....4....1....1....4
..4....2....2....0....3....2....0....0....3....3....2....1....2....4....1....1
..0....3....0....1....3....2....2....3....2....2....3....2....3....4....0....0
..3....3....3....0....4....2....0....3....0....1....1....1....3....2....2....1
CROSSREFS
Sequence in context: A333101 A206121 A349808 * A244697 A244698 A244699
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 04 2014
STATUS
approved

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Last modified April 23 19:56 EDT 2024. Contains 371916 sequences. (Running on oeis4.)