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A269150
Number of nX6 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
1
1620, 330192, 46576336, 6004186984, 738478504448, 88082672552208, 10275566914040000, 1178661175005532168, 133416857282270562320, 14941436920498380518848, 1658672032118594665963168
OFFSET
1,1
COMMENTS
Column 6 of A269152.
LINKS
EXAMPLE
Some solutions for n=2
..2..3..3..2..3..2. .3..2..0..1..3..3. .1..1..3..3..2..0. .2..2..3..2..2..0
..0..1..3..2..2..0. .0..2..0..1..1..1. .0..1..1..1..0..1. .0..2..2..2..2..3
CROSSREFS
Cf. A269152.
Sequence in context: A206537 A269278 A269184 * A269212 A269095 A269274
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 20 2016
STATUS
approved