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A219447 Unchanging value maps: number of nX4 binary arrays indicating the locations of corresponding elements unequal to no king-move neighbor in a random 0..2 nX4 array 1
7, 7, 43, 169, 665, 2603, 10421, 41777, 166911, 665377, 2653983, 10593377, 42287115, 168773051, 673542439, 2688054999, 10728134353, 42816483399, 170881260415, 681987867801, 2721820100855, 10862822905207, 43353681555939 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A219451

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..70

FORMULA

Empirical: a(n) = 5*a(n-1) -7*a(n-2) +8*a(n-3) +20*a(n-4) -22*a(n-5) +6*a(n-6) +34*a(n-7) +15*a(n-8) -21*a(n-9) -28*a(n-10) -35*a(n-11) -9*a(n-12) -a(n-13) for n>14

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A022667 A143430 A219399 * A271064 A173294 A165828

Adjacent sequences:  A219444 A219445 A219446 * A219448 A219449 A219450

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 20 2012

STATUS

approved

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Last modified June 16 19:49 EDT 2021. Contains 345068 sequences. (Running on oeis4.)