A237206 Number of (n+1)X(3+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock equal.

5130, 59386, 655186, 8448682, 107553623, 1448414238, 19305898426, 264733943408, 3593534378650, 49695732377361, 680698849965170, 9457824351573836, 130255102350059706, 1815360844500949400, 25097384613531422114

Offset

1,1

Comments

Column 3 of A237211

Links

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

Example

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

Crossrefs

Sequence in context: A195648 A252919 A255779 * A230575 A251244 A188338

Adjacent sequences: A237203 A237204 A237205 * A237207 A237208 A237209

Keyword

nonn

Author

R. H. Hardin, Feb 05 2014

Status

approved