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A220278 Equals two maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nX5 array 0
7, 322, 7987, 192553, 4761666, 120451866 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A220279

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A219267 A244851 A082160 * A163437 A109059 A002000

Adjacent sequences:  A220275 A220276 A220277 * A220279 A220280 A220281

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 09 2012

STATUS

approved

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Last modified July 15 21:14 EDT 2020. Contains 335774 sequences. (Running on oeis4.)