A222513 Number of 5Xn 0..1 arrays with exactly floor(5Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order

0, 8, 87, 497, 2066, 17674, 81537, 800040, 3877847, 39636760, 197167116, 2044535652, 10266459303, 107207411996, 541084890084, 5674279900642, 28738733251005, 302282496834886, 1535249200603440, 16185756541061498

Offset

1,2

Comments

Row 5 of A222509

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

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

Crossrefs

Sequence in context: A241259 A225314 A200767 * A307822 A225613 A358982

Adjacent sequences: A222510 A222511 A222512 * A222514 A222515 A222516

Keyword

nonn

Author

R. H. Hardin Feb 23 2013

Status

approved