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A304144 Number of nX3 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero. 1
1, 14, 18, 25, 113, 238, 359, 1309, 3091, 5173, 15475, 39432, 72084, 189527, 495712, 981404, 2379279, 6211445, 13097776, 30387724, 77976438, 172291180, 391956305, 983542082, 2243798047, 5079682165, 12475410712, 29036847557, 65931275352 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A304149.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +3*a(n-2) +11*a(n-3) -5*a(n-4) -39*a(n-5) -29*a(n-6) +4*a(n-7) +42*a(n-8) +15*a(n-9) +12*a(n-10) -2*a(n-11) -4*a(n-12) -16*a(n-13) -8*a(n-14) for n>16

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304149.

Sequence in context: A051419 A000053 A169871 * A327933 A079349 A355041

Adjacent sequences:  A304141 A304142 A304143 * A304145 A304146 A304147

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 07 2018

STATUS

approved

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Last modified July 2 10:39 EDT 2022. Contains 355004 sequences. (Running on oeis4.)