A216615 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of a 7Xn array with new integer colors introduced in row major order

5, 203, 6097, 4213597, 942420901, 3376465219485, 2043835395791757, 20538493137072741201

Offset

1,1

Comments

Row 7 of A216612

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=4
..x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1
..1..x..2..x....1..x..2..x....1..x..2..x....1..x..2..x....1..x..2..x
..x..0..x..1....x..0..x..3....x..0..x..3....x..0..x..3....x..0..x..3
..1..x..3..x....2..x..4..x....3..x..4..x....3..x..2..x....4..x..1..x
..x..4..x..5....x..0..x..5....x..5..x..1....x..4..x..5....x..5..x..2
..0..x..3..x....5..x..6..x....1..x..6..x....3..x..6..x....0..x..4..x
..x..4..x..6....x..7..x..5....x..0..x..4....x..2..x..0....x..1..x..3

Crossrefs

Sequence in context: A196799 A196587 A197044 * A215923 A208468 A070906

Adjacent sequences: A216612 A216613 A216614 * A216616 A216617 A216618

Keyword

nonn

Author

R. H. Hardin Sep 10 2012

Status

approved