A282524 - OEIS

A282524

Number of nX4 0..1 arrays with no 1 equal to more than two of its king-move neighbors.

16, 144, 1097, 10041, 86258, 747184, 6509805, 56491269, 490864610, 4264923086, 37050720521, 321900061391, 2796629083314, 24296771328032, 211088176539105, 1833911682996023, 15932837293475536, 138422869112220318

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 4 of A282528.

LINKS

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

FORMULA

Empirical: a(n) = 7*a(n-1) +16*a(n-2) +17*a(n-3) -256*a(n-4) +62*a(n-5) +45*a(n-6) -162*a(n-7) +19*a(n-8) -123*a(n-9) +8*a(n-10) +29*a(n-11) +2*a(n-12) +2*a(n-13) -a(n-14)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A282528.

Sequence in context: A217711 A086952 A230971 * A287168 A155663 A077485

Adjacent sequences: A282521 A282522 A282523 * A282525 A282526 A282527

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 17 2017

STATUS

approved