A222287 Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order

4, 8, 83, 1125, 6582, 89852, 564838, 7879795, 50958999, 723447048, 4750196831, 67994171066, 451003258750, 6495868727212, 43379306929941, 627562261878355, 4211483429644946, 61133435798313074, 411800332378830207

Offset

1,1

Comments

Column 5 of A222290

Links

R. H. Hardin, Table of n, a(n) for n = 1..79

Example

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

Crossrefs

Sequence in context: A221256 A068208 A090254 * A120281 A331986 A057974

Adjacent sequences: A222284 A222285 A222286 * A222288 A222289 A222290

Keyword

nonn

Author

R. H. Hardin Feb 14 2013

Status

approved