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A197105 Half the number of nX4 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors 1
61, 13526, 2548972, 478107878, 89735942231, 16851142959473, 3164557733113615, 594285270687803282, 111603060903635664138, 20958362653981821987537, 3935850790928404307414023, 739128413975624217196282524 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A197109

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..27

EXAMPLE

Some solutions for 5X5

..1..0..0..2....1..0..0..2....1..0..0..2....1..0..0..2....1..0..0..2

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

..0..2..1..0....2..2..1..0....3..0..1..0....0..2..1..0....3..2..1..0

..0..2..0..3....3..1..0..1....1..2..0..0....0..1..1..3....0..3..0..3

..3..1..0..1....2..2..0..1....3..0..0..3....2..2..2..2....2..0..1..1

CROSSREFS

Sequence in context: A093261 A062638 A261238 * A195216 A259412 A099683

Adjacent sequences:  A197102 A197103 A197104 * A197106 A197107 A197108

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 10 2011

STATUS

approved

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Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)