A237901 Number of (n+1) X (3+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.

12441, 265306, 5825366, 130240640, 2894506130, 64281925312, 1428716811643, 31771479675504, 706435639166636, 15702067218875532, 349084196018350256, 7760362296695540800, 172539246416718638096, 3835413694548281288228, 85271604882664917370996, 1895569317386969167769384

Offset

1,1

Links

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

Example

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

Crossrefs

Column 3 of A237904.

Sequence in context: A068676 A252613 A221016 * A234127 A272132 A206664

Adjacent sequences: A237898 A237899 A237900 * A237902 A237903 A237904

Keyword

nonn

Author

R. H. Hardin, Feb 15 2014

Status

approved