A230680 Number of 6Xn 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j)

0, 11925, 3669765, 1100265795, 436827078531, 169908632412447, 65376252475286079, 25197971211829585887, 9715194049282171327617, 3745393333629058405378449, 1443910366341874206277548363

Offset

1,2

Comments

Row 6 of A230675

Links

R. H. Hardin, Table of n, a(n) for n = 1..33

Example

Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..2..2..1....0..2..2....2..2..1....2..2..0....2..2..0....0..2..2....0..2..2
..1..1..0....0..1..1....1..1..1....2..0..2....0..1..1....1..1..1....0..0..0
..0..0..2....2..0..1....2..2..2....1..1..0....1..0..2....0..0..2....1..2..0
..0..2..2....2..2..0....0..0..0....1..2..0....1..1..0....0..2..0....2..1..0
..2..0..2....0..0..0....2..0..2....2..0..0....1..2..1....1..1..1....2..0..2

Crossrefs

Sequence in context: A186603 A346027 A222800 * A218458 A321157 A237635

Adjacent sequences: A230677 A230678 A230679 * A230681 A230682 A230683

Keyword

nonn

Author

R. H. Hardin, Oct 27 2013

Status

approved