A266015 Number of 5Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors equal to itself.

1, 1, 22, 14, 70, 154, 486, 1602, 5777, 10188, 28506, 101227, 267042, 698241, 2005275, 5355840, 15507088, 43713710, 117062325, 328169426, 927529600, 2543571216, 7113125250, 19776079964, 54664483400, 152873904217, 425365839757

Offset

1,3

Comments

Row 5 of A266012.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A266012.

Sequence in context: A196030 A196027 A040464 * A070665 A161551 A291428

Adjacent sequences: A266012 A266013 A266014 * A266016 A266017 A266018

Keyword

nonn

Author

R. H. Hardin, Dec 20 2015

Status

approved