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A222908
Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order
1
5, 14, 45, 373, 1202, 18981, 82020, 1506810, 6857704, 129852811, 597088326, 11405469595, 52673539459, 1011491590878, 4687412959525, 90358383040770, 419948850379586, 8119819516703235, 37831903319054460, 733292643562816976
OFFSET
1,1
COMMENTS
Row 3 of A222906
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1....0..1..0....0..0..1....0..0..0....0..0..1....0..0..0....0..0..0
..0..1..1....0..0..0....0..0..0....0..0..0....0..2..2....0..0..0....1..2..2
..1..1..1....0..0..0....0..0..0....0..0..1....2..2..2....0..1..1....2..2..2
CROSSREFS
Sequence in context: A100059 A270062 A270661 * A270911 A270154 A271307
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 09 2013
STATUS
approved