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A244181 Number of length n+4 0..6 arrays with no five consecutive elements with pattern ababa or abbba (possibly a=b) and new values 0..6 introduced in 0..6 order. 1
49, 189, 812, 3831, 19575, 107068, 620051, 3761768, 23672967, 153195068, 1012193894, 6790031062, 46049430032, 314747056865, 2163216369847, 14925717570522, 103268459621107, 715886439482974, 4969531078567004 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A244185.

LINKS

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

FORMULA

Empirical: a(n) = 11*a(n-1) -14*a(n-2) -109*a(n-3) -50*a(n-4) +561*a(n-5) +1905*a(n-6) +2485*a(n-7) -1765*a(n-8) -16073*a(n-9) -42234*a(n-10) -71345*a(n-11) -80685*a(n-12) -38274*a(n-13) +82534*a(n-14) +284947*a(n-15) +538989*a(n-16) +786421*a(n-17) +962575*a(n-18) +1022055*a(n-19) +956487*a(n-20) +794930*a(n-21) +587882*a(n-22) +386232*a(n-23) +224067*a(n-24) +113614*a(n-25) +49515*a(n-26) +18041*a(n-27) +5264*a(n-28) +1116*a(n-29) +144*a(n-30).

EXAMPLE

Some solutions for n=6

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

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

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

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

..3....4....1....2....2....2....1....3....3....2....0....0....3....2....1....3

..4....1....1....3....3....1....2....4....1....3....2....2....4....3....0....2

..5....4....0....0....3....3....2....0....1....0....3....3....2....0....3....1

..0....5....2....2....4....1....0....1....3....2....1....3....2....4....1....4

..3....6....1....3....0....4....3....3....3....4....1....1....0....0....2....4

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

CROSSREFS

Cf. A244185.

Sequence in context: A244695 A244179 A244180 * A244182 A244183 A244184

Adjacent sequences: A244178 A244179 A244180 * A244182 A244183 A244184

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 21 2014

STATUS

approved

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Last modified March 31 05:57 EDT 2023. Contains 361634 sequences. (Running on oeis4.)