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A269219 Number of 6Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once. 1
0, 889056, 118872576, 17118725376, 2267772823680, 292321215814512, 36713945487331392, 4528086446983948224, 550465224463202188320, 66156064863501806179776, 7876627077577027391888640 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A269214.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

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

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

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

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

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

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

CROSSREFS

Cf. A269214.

Sequence in context: A128286 A250571 A092016 * A224594 A105379 A186792

Adjacent sequences:  A269216 A269217 A269218 * A269220 A269221 A269222

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 20 2016

STATUS

approved

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Last modified June 18 07:15 EDT 2019. Contains 324203 sequences. (Running on oeis4.)