A222489 Number of 2Xn 0..2 arrays with exactly floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order

0, 0, 4, 5, 14, 100, 152, 998, 2168, 10768, 25816, 125264, 303568, 1457312, 3658176, 16964356, 44394392, 199079568, 539372480, 2352788576, 6567620800, 27950582336, 80148609344, 333551963152, 979715239584, 3996802471680, 11991536245888

Offset

1,3

Comments

Row 2 of A222488

Links

R. H. Hardin, Table of n, a(n) for n = 1..65

Example

All solutions for n=4
..0..0..1..1....0..1..1..1....0..0..0..1....0..0..0..1....0..1..1..1
..0..0..1..1....0..1..1..1....0..0..0..1....0..0..0..2....2..1..1..1

Crossrefs

Sequence in context: A041034 A281911 A042535 * A222501 A225204 A363817

Adjacent sequences: A222486 A222487 A222488 * A222490 A222491 A222492

Keyword

nonn

Author

R. H. Hardin Feb 22 2013

Status

approved