A265996 Number of 6Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.

1, 2, 66, 7, 1, 5, 137, 82, 118, 178, 354, 853, 1574, 3143, 6240, 11295, 22586, 46672, 103020, 212861, 423225, 875790, 1853269, 4033811, 8686030, 18595574, 40704019, 89768106, 200052780, 449679282, 1015358749, 2306160010, 5269874673

Offset

1,2

Comments

Row 6 of A265991.

Links

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

Example

Some solutions for n=4
..1..2..2..1....1..3..1..1....1..3..1..1....1..2..2..1....1..3..1..1
..1..1..1..1....1..1..3..2....1..1..3..2....1..1..1..1....1..1..4..2
..1..4..3..2....1..3..4..2....1..3..4..2....1..3..3..2....1..3..3..2
..2..3..4..1....2..3..3..1....2..3..3..1....2..4..3..1....2..4..3..1
..1..1..1..1....1..1..1..1....2..4..1..1....2..3..1..1....2..3..1..1
..1..2..2..1....1..2..2..1....1..1..3..1....1..1..3..1....1..1..3..1

Crossrefs

Cf. A265991.

Sequence in context: A326253 A003821 A055765 * A309169 A231946 A333677

Adjacent sequences: A265993 A265994 A265995 * A265997 A265998 A265999

Keyword

nonn

Author

R. H. Hardin, Dec 19 2015

Status

approved