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A221288 Equals two maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 nX5 array 0
7, 200, 5912, 172904, 4983598, 143511784, 4129628435, 118813480496, 3418203388701, 98338490101681, 2829094038032543, 81389941488977962, 2341498869979723606, 67362334665049967042, 1937939871911867309221 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A221290

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A057204 A124988 A220934 * A276537 A233507 A316862

Adjacent sequences:  A221285 A221286 A221287 * A221289 A221290 A221291

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 09 2013

STATUS

approved

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Last modified May 9 12:26 EDT 2021. Contains 343740 sequences. (Running on oeis4.)