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A275042
Number of 7Xn 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.
1
48, 1458, 4463, 40572, 351197, 3056856, 26631796, 233894638, 2060522620, 18133339314, 159409773544, 1403470741331, 12369772366128, 108977203894120, 959787320624928, 8456446218440229, 74528469200536291, 656752270728416591
OFFSET
1,1
COMMENTS
Row 7 of A275037.
LINKS
EXAMPLE
Some solutions for n=4
..0..1..0..2. .0..1..2..0. .0..1..0..1. .0..1..0..2. .0..1..2..1
..1..0..2..0. .1..2..1..2. .1..2..1..2. .1..0..1..0. .2..1..2..0
..1..0..2..1. .1..2..0..1. .1..0..2..0. .1..0..2..1. .1..0..1..2
..2..1..0..1. .0..1..0..1. .2..0..2..1. .2..1..0..1. .0..2..0..1
..0..1..0..2. .2..0..1..0. .2..1..0..1. .0..2..1..2. .0..1..2..0
..0..2..1..2. .1..0..1..2. .0..2..1..2. .1..2..1..0. .2..0..1..2
..2..0..2..1. .0..1..2..1. .1..2..1..0. .2..0..2..0. .1..0..1..2
CROSSREFS
Cf. A275037.
Sequence in context: A089272 A004362 A160368 * A062195 A264322 A329776
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 14 2016
STATUS
approved