A228985 Number of nX7 0..1 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X8 0..1 array.

128, 15328, 1690048, 155031688, 13667372880, 1186378174632, 102496979446048, 8840592483085496, 762100592070241256, 65684195622535124744, 5660847063615396145552, 487856774627992271501960

Offset

1,1

Comments

Column 7 of A228986.

Links

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

Example

Some solutions for n=4
..0..0..0..0..0..0..1....0..0..0..0..0..1..0....0..0..0..0..0..1..1
..0..0..0..1..0..1..0....0..0..0..1..0..1..1....0..0..0..1..1..1..0
..0..0..1..0..0..0..0....0..0..1..0..1..1..0....0..0..0..0..0..1..1
..0..0..0..0..1..1..1....0..0..0..0..1..1..0....0..1..0..0..0..1..1

Crossrefs

Sequence in context: A283856 A283414 A184760 * A282315 A093532 A016747

Adjacent sequences: A228982 A228983 A228984 * A228986 A228987 A228988

Keyword

nonn

Author

R. H. Hardin, Sep 10 2013

Status

approved