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A300337 Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1
1, 13, 47, 255, 1272, 6780, 36498, 198531, 1088200, 5984027, 32988462, 182088665, 1005876277, 5559093240, 30731030239, 169909426328, 939499539384, 5195152803248, 28728519606270, 158867780965085, 878542696196419 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A300342.

LINKS

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

FORMULA

Empirical: a(n) = 6*a(n-1) +6*a(n-2) -40*a(n-3) -59*a(n-4) +79*a(n-5) +97*a(n-6) -40*a(n-7) +20*a(n-8) +8*a(n-9) -44*a(n-10) -6*a(n-11) for n>13

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300342.

Sequence in context: A233059 A183775 A146806 * A135712 A225920 A027980

Adjacent sequences:  A300334 A300335 A300336 * A300338 A300339 A300340

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 03 2018

STATUS

approved

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Last modified June 22 03:25 EDT 2021. Contains 345367 sequences. (Running on oeis4.)