A205916 Number of (n+1) X 8 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and the same number of counterclockwise edge increases as its vertical neighbors.

1112664, 17051166, 976932162, 63265158237, 4140502079766, 274342874332980, 18225426305218983, 1214621133289445748, 80992571869156601646, 5405796006447301221615, 360832630784933797787058

Offset

1,1

Comments

Column 7 of A205917.

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

Example

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

Crossrefs

Cf. A205917.

Sequence in context: A262498 A257937 A205735 * A205908 A258679 A324647

Adjacent sequences: A205913 A205914 A205915 * A205917 A205918 A205919

Keyword

nonn

Author

R. H. Hardin, Feb 01 2012

Status

approved