A237563 Number of (n+1)X(4+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

4984, 36168, 272828, 2161168, 16418704, 126608036, 977290740, 7535608804, 58063606256, 448289864392, 3456613948984, 26668571599444, 205730883605708, 1587504816424160, 12247201217867592, 94497740674303132, 729079328234055112

Offset

1,1

Comments

Column 4 of A237567

Links

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

Example

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

Crossrefs

Sequence in context: A254696 A203064 A239506 * A248486 A070001 A145540

Adjacent sequences: A237560 A237561 A237562 * A237564 A237565 A237566

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved