A205419 Number of (n+1)X4 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors

31216, 1448498, 74565586, 3739413082, 189526149374, 9487785520264, 479223390230911, 24061843214827776, 1213236873317242638, 60992136826204821164, 3072885977035886525323, 154568462696565575064636

Offset

1,1

Comments

Column 3 of A205422

Links

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

Example

Some solutions for n=4
..2..0..2..2....1..0..3..2....3..2..1..0....1..0..0..1....1..0..0..1
..1..1..0..1....2..1..2..1....1..0..1..2....1..3..0..1....0..3..0..1
..1..2..3..1....1..0..2..2....0..3..2..3....0..0..3..2....1..2..0..3
..0..0..3..0....3..3..3..3....2..3..3..0....1..1..2..0....1..2..1..0
..0..1..2..1....3..2..3..1....3..2..2..1....3..0..1..1....2..3..2..3

Crossrefs

Sequence in context: A285695 A186800 A230753 * A345576 A345832 A236891

Adjacent sequences: A205416 A205417 A205418 * A205420 A205421 A205422

Keyword

nonn

Author

R. H. Hardin Jan 27 2012

Status

approved