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A221360
Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2
0
0, 2088, 410571, 93433746, 18970881500, 3872954657964, 786996595093490, 160119440729359632, 32584677552562837495, 6632852849038384025825
OFFSET
1,2
COMMENTS
Column 5 of A221361
EXAMPLE
Some solutions for n=3
..0..1..2..2..0....0..2..1..1..1....0..0..1..1..2....0..2..1..1..2
..0..1..1..1..1....0..1..1..2..1....1..1..2..2..1....1..0..1..2..1
..2..1..1..2..0....2..0..0..2..1....1..0..2..0..1....1..1..1..1..0
CROSSREFS
Sequence in context: A250076 A255146 A293106 * A106720 A179124 A206606
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 12 2013
STATUS
approved