A221093 Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor

0, 4096, 4244238, 18736955689, 47632473997312, 137999718103495689, 376959882525471479946, 1047276497234600613324304, 2882029793367070337506842240

Offset

1,2

Comments

Row 7 of A221087

Links

Table of n, a(n) for n=1..9.

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
..1..1..0....1..1..0....1..1..0....1..1..1....1..1..1....1..1..0....1..1..1
..2..2..0....2..3..0....1..2..1....0..4..1....0..4..0....1..2..2....0..3..0
..1..4..0....1..1..0....1..2..1....1..0..1....1..0..0....0..2..1....1..3..1
..0..1..1....0..4..0....0..3..0....0..3..0....1..3..1....0..3..0....0..1..0
..0..3..1....1..2..0....1..3..1....1..3..0....1..1..0....0..2..0....2..2..1
..0..1..1....1..1..1....0..1..0....0..1..1....1..3..0....1..2..1....0..2..0

Crossrefs

Sequence in context: A017034 A017118 A269294 * A017214 A017322 A223268

Adjacent sequences: A221090 A221091 A221092 * A221094 A221095 A221096

Keyword

nonn

Author

R. H. Hardin Jan 01 2013

Status

approved