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A220317 Equals two maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..2 nX3 array 0
2, 24, 353, 3167, 28215, 237144, 1944692, 15735116, 126513306, 1014237718, 8120891182, 64989221681, 519982144806, 4160063431147 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A220319

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=3

..0..1..0....0..0..0....1..1..1....1..0..0....1..1..0....0..1..1....0..0..0

..0..1..1....1..1..1....0..1..1....0..0..0....1..1..0....1..0..0....0..0..1

..0..0..1....0..1..0....0..0..0....1..0..1....1..0..1....0..1..0....1..0..0

CROSSREFS

Sequence in context: A333715 A081065 A043699 * A220340 A134805 A119702

Adjacent sequences:  A220314 A220315 A220316 * A220318 A220319 A220320

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 10 2012

STATUS

approved

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Last modified October 3 07:43 EDT 2022. Contains 357231 sequences. (Running on oeis4.)