A237970 Number of (n+1) X (4+1) 0..3 arrays with the upper median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

40442, 357672, 2609908, 25087700, 255374826, 2480183866, 24232087766, 242591959184, 2393881373820, 23436165715384, 231406144872410, 2289251323274992, 22505424261636832, 221515001897626222

Offset

1,1

Comments

Column 4 of A237974.

Links

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

Example

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

Crossrefs

Cf. A237974.

Sequence in context: A276567 A216291 A216290 * A218399 A090060 A250955

Adjacent sequences: A237967 A237968 A237969 * A237971 A237972 A237973

Keyword

nonn

Author

R. H. Hardin, Feb 16 2014

Status

approved