A237571 Number of (n+1)X(3+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

13924, 315664, 7379204, 173478980, 4093774632, 95639726868, 2255748816966, 52746091216472, 1244121688354740, 29088796774026344, 686098112079186338, 16041540535482336896, 378367591142818627910, 8846617965689182153740

Offset

1,1

Comments

Column 3 of A237574

Links

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

Example

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

Crossrefs

Sequence in context: A190817 A298428 A252557 * A244273 A118464 A031666

Adjacent sequences: A237568 A237569 A237570 * A237572 A237573 A237574

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved