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A269179 Number of nXn 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three exactly once. 0
0, 48, 5888, 2097552, 2563440512, 11426543880704, 192247800095048896, 12445275374147703433760, 3138050414883209885285902752, 3107560086436286975829696986907248 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A269186.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..0..1..1. .0..2..3. .1..1..1. .3..2..3. .0..2..2. .1..1..0. .3..1..3

..1..0..0. .2..2..2. .3..1..1. .3..2..0. .0..2..3. .0..0..2. .3..2..3

..0..1..2. .2..0..3. .0..1..1. .2..2..0. .3..2..3. .0..0..0. .3..2..3

CROSSREFS

Cf. A269186.

Sequence in context: A265666 A114721 A057868 * A276098 A233242 A266045

Adjacent sequences:  A269176 A269177 A269178 * A269180 A269181 A269182

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 20 2016

STATUS

approved

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Last modified August 18 22:08 EDT 2019. Contains 326109 sequences. (Running on oeis4.)