A230190 Number of 7Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j)

0, 8193, 1223799, 756450105, 400233701367, 218117038953009, 117863748242661711, 63824360296979648967, 34546668873829672101987, 18700870126913632045893531, 10123031708751736005223316745

Offset

1,2

Comments

Row 7 of A230184

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

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

Crossrefs

Sequence in context: A236221 A300567 A323544 * A017689 A013961 A036091

Adjacent sequences: A230187 A230188 A230189 * A230191 A230192 A230193

Keyword

nonn

Author

R. H. Hardin, Oct 11 2013

Status

approved