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A244178 Number of length n+4 0..3 arrays with no five consecutive elements with pattern ababa or abbba (possibly a=b) and new values 0..3 introduced in 0..3 order 1
48, 173, 650, 2495, 9667, 37604, 146521, 571315, 2228340, 8692454, 33909901, 132287996, 516081723, 2013345287, 7854504270, 30642176351, 119542013302, 466360306590, 1819376645854, 7097798434855, 27690112004115, 108025370530911 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A244185

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +6*a(n-2) +6*a(n-3) +3*a(n-4) -10*a(n-5) -23*a(n-6) -34*a(n-7) -36*a(n-8) -28*a(n-9) -19*a(n-10) -8*a(n-11) -3*a(n-12)

EXAMPLE

Some solutions for n=6

..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

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

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A044761 A248456 A346293 * A131683 A066134 A233682

Adjacent sequences:  A244175 A244176 A244177 * A244179 A244180 A244181

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 21 2014

STATUS

approved

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Last modified November 26 10:15 EST 2022. Contains 358356 sequences. (Running on oeis4.)