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A275084
Number of n X n 0..2 arrays with no element equal to any value at offset (0,-2), (-1,-2) or (-2,-1) and new values introduced in order 0..2.
0
1, 14, 192, 3088, 87924, 5038428, 512150588, 96851464412, 34421374000200, 22305044857494304, 26793208475912331160, 59563800755983637416156, 244126929061976907515769752
OFFSET
1,2
COMMENTS
Diagonal of A275090.
EXAMPLE
Some solutions for n=4
..0..0..1..2. .0..1..2..0. .0..1..1..0. .0..1..1..0. .0..1..2..0
..0..0..1..1. .0..2..1..0. .0..2..1..0. .2..1..1..0. .1..1..2..2
..0..1..1..2. .1..1..2..0. .0..1..2..0. .1..1..0..0. .1..2..2..0
..1..1..2..0. .2..2..0..0. .0..1..1..2. .0..1..2..0. .0..2..2..1
CROSSREFS
Cf. A275090.
Sequence in context: A055759 A368702 A368536 * A086946 A158530 A348549
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 16 2016
STATUS
approved