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A242321 Number of length n+6+2 0..6 arrays with every value 0..6 appearing at least once in every consecutive 6+3 elements, and new values 0..6 introduced in order 1
462, 1638, 5334, 16194, 47466, 137166, 395166, 1141290, 3312546, 9669270, 28147842, 81849030, 237928206, 691657866, 2010909066, 5847101166, 17002342422, 49439204898, 143753422386, 417985825410, 1215362762970, 3533881164654 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A242322

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..63

FORMULA

Empirical: a(n) = a(n-1) +2*a(n-2) +4*a(n-3) +8*a(n-4) +14*a(n-5) +26*a(n-6) +44*a(n-7) +56*a(n-8) -11*a(n-9) -19*a(n-10) -28*a(n-11) -28*a(n-12) -8*a(n-14) -20*a(n-15) -20*a(n-16) +5*a(n-18) +11*a(n-19) +10*a(n-20) +2*a(n-23) +2*a(n-24) -a(n-27) -a(n-28)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

..1....5....2....2....5....4....4....4....6....1....4....2....5....5....6....2

..5....1....5....5....6....5....5....5....0....5....5....5....1....6....2....5

..6....6....6....6....0....6....6....6....1....6....6....6....6....1....1....6

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

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

..3....4....1....1....2....1....1....0....3....5....6....5....5....6....3....0

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

CROSSREFS

Sequence in context: A267740 A334408 A254468 * A222342 A246476 A202642

Adjacent sequences:  A242318 A242319 A242320 * A242322 A242323 A242324

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 10 2014

STATUS

approved

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Last modified December 9 06:07 EST 2021. Contains 349627 sequences. (Running on oeis4.)