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

7, 7, 43, 169, 665, 2603, 10421, 41777, 166911, 665377, 2653983, 10593377, 42287115, 168773051, 673542439, 2688054999, 10728134353, 42816483399, 170881260415, 681987867801, 2721820100855, 10862822905207, 43353681555939

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