A185840 Number of (n+1) X 5 0..2 arrays with every 2 X 2 subblock trace equal to some horizontal or vertical neighbor 2 X 2 subblock trace.

3249, 222003, 10670517, 560733777, 29306445165, 1532963751183, 80217651167325, 4197053176231149, 219601118427318765, 11490030204820182927, 601185773584255262859, 31455455893650113824017, 1645823762938509830816193

Offset

1,1

Comments

Column 4 of A185845.

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3 X 5
..1..0..1..2..2....1..1..1..1..1....2..0..1..2..1....0..1..2..1..1
..0..1..2..1..0....0..0..0..1..2....1..0..2..2..0....1..2..2..1..2
..1..2..2..1..1....2..2..2..2..2....0..0..1..1..0....0..1..1..1..2

Crossrefs

Cf. A185845.

Sequence in context: A048421 A238254 A187135 * A251501 A106722 A031555

Adjacent sequences: A185837 A185838 A185839 * A185841 A185842 A185843

Keyword

nonn

Author

R. H. Hardin, Feb 05 2011

Status

approved