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A276292
Number of n X n 0..2 arrays with no element equal to any value at offset (-2,-1), (-1,1) or (0,-1) and new values introduced in order 0..2.
0
1, 4, 45, 1017, 50949, 4988145, 1073114625, 456837553545, 427500156271073, 794420496019076757, 3247016064162495298253
OFFSET
1,2
COMMENTS
Diagonal of A276299.
EXAMPLE
Some solutions for n=4
..0..1..0..2. .0..1..2..1. .0..1..0..1. .0..1..2..0. .0..1..2..1
..0..2..0..1. .0..1..2..1. .0..2..0..2. .2..0..2..1. .2..1..0..1
..0..2..0..1. .0..1..2..0. .1..2..0..1. .2..1..2..1. .0..1..0..1
..1..2..0..2. .2..1..2..1. .0..1..0..1. .2..1..2..0. .0..1..2..1
CROSSREFS
Cf. A276299.
Sequence in context: A197989 A377830 A338456 * A174484 A158887 A126452
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 28 2016
STATUS
approved