A222508 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order

5, 44, 441, 8489, 81537, 1802656, 19892241, 473772613, 5455705052, 132847734428, 1556509083100, 38249750511090, 451888833065131, 11163258877769638, 132555800154675325, 3286688523503328223, 39169490256183059057

Offset

1,1

Comments

Column 7 of A222509

Links

R. H. Hardin, Table of n, a(n) for n = 1..30

Example

Some solutions for n=3
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..1..1..1..1..1
..0..1..0..0..0..0..0....0..0..0..0..1..0..1....1..0..1..1..1..1..1
..0..0..0..1..0..0..0....0..0..0..0..0..1..0....0..1..0..1..1..1..1

Crossrefs

Sequence in context: A227640 A096355 A371787 * A220841 A366924 A343425

Adjacent sequences: A222505 A222506 A222507 * A222509 A222510 A222511

Keyword

nonn

Author

R. H. Hardin Feb 23 2013

Status

approved