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A269582 Number of length-n 0..7 arrays with no repeated value differing from the previous repeated value by more than one. 1
8, 64, 512, 4054, 31844, 248464, 1927694, 14883506, 114432704, 876609410, 6693701964, 50967425636, 387098903346, 2933396893868, 22183992767622, 167461699511636, 1262042210932508, 9496886175805244, 71366766025036418 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A269583.

LINKS

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

FORMULA

Empirical: a(n) = 35*a(n-1) -485*a(n-2) +3290*a(n-3) -10541*a(n-4) +10073*a(n-5) +11122*a(n-6) +2072*a(n-7) -47*a(n-8) -14*a(n-9)

EXAMPLE

Some solutions for n=5

..5. .6. .3. .2. .1. .7. .7. .4. .3. .7. .6. .5. .4. .1. .3. .0

..7. .0. .1. .1. .7. .4. .7. .0. .6. .7. .2. .6. .7. .2. .6. .4

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

..7. .0. .7. .0. .4. .3. .7. .6. .6. .0. .7. .7. .1. .0. .0. .7

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

CROSSREFS

Cf. A269583.

Sequence in context: A222388 A222937 A269618 * A269434 A269689 A269493

Adjacent sequences:  A269579 A269580 A269581 * A269583 A269584 A269585

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 01 2016

STATUS

approved

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Last modified December 9 03:42 EST 2021. Contains 349625 sequences. (Running on oeis4.)