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A282555 Number of nX3 0..1 arrays with no 1 equal to more than two of its king-move neighbors, with the exception of exactly one element. 1
0, 10, 89, 618, 4167, 26278, 160698, 961128, 5646223, 32728582, 187665494, 1066534616, 6016524469, 33727550278, 188052863995, 1043617792094, 5767952401833, 31763527625488, 174355772236351, 954313092199506 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A282560.

LINKS

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

FORMULA

Empirical: a(n) = 10*a(n-1) -21*a(n-2) -22*a(n-3) -42*a(n-4) +270*a(n-5) -35*a(n-6) -104*a(n-7) -518*a(n-8) +572*a(n-9) -197*a(n-10) -84*a(n-11) +340*a(n-12) -156*a(n-13) -4*a(n-14) +24*a(n-15) -36*a(n-16)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A282560.

Sequence in context: A302149 A269008 A000826 * A120923 A057081 A024132

Adjacent sequences:  A282552 A282553 A282554 * A282556 A282557 A282558

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 18 2017

STATUS

approved

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Last modified August 3 05:55 EDT 2020. Contains 336197 sequences. (Running on oeis4.)