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A299062 Number of nX3 0..1 arrays with every element equal to 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 1
1, 18, 141, 993, 7330, 54106, 398654, 2937795, 21650600, 159556133, 1175862733, 8665626722, 63862119016, 470637646700, 3468406597875, 25560735353400, 188372145331363, 1388225520347031, 10230653220855076, 75395721942360742 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A299067.

LINKS

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

FORMULA

Empirical: a(n) = 6*a(n-1) +8*a(n-2) +14*a(n-3) +11*a(n-4) -4*a(n-5) +3*a(n-6) +2*a(n-7) -5*a(n-8) -2*a(n-9) for n>10

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299067.

Sequence in context: A108680 A204273 A081074 * A299723 A125355 A299834

Adjacent sequences:  A299059 A299060 A299061 * A299063 A299064 A299065

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 01 2018

STATUS

approved

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Last modified January 19 18:13 EST 2020. Contains 331051 sequences. (Running on oeis4.)