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A240772 Number of nX4 0..3 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..3 introduced in row major order 1
5, 196, 8319, 357943, 15484811, 671539712, 29164866719, 1267677501494, 55127359226486, 2397991057304305, 104327512613317759, 4539326052824027843, 197518541157705375152, 8594849725702241760851, 374004476219684412455327 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A240774

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..193

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A194573 A194574 A194575 * A142927 A114351 A296172

Adjacent sequences:  A240769 A240770 A240771 * A240773 A240774 A240775

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 2014

STATUS

approved

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Last modified April 21 22:12 EDT 2019. Contains 322328 sequences. (Running on oeis4.)