A236982 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal

3000, 16212, 78976, 556322, 3448154, 26255552, 180781130, 1407433782, 10159143566, 79598995100, 588021453966, 4616820166256, 34554095952112, 271556460785234, 2049996681789834, 16121976104986232, 122498519844604318

Offset

1,1

Comments

Column 3 of A236987

Links

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

Example

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

Crossrefs

Sequence in context: A333013 A158861 A329169 * A202097 A229782 A269885

Adjacent sequences: A236979 A236980 A236981 * A236983 A236984 A236985

Keyword

nonn

Author

R. H. Hardin, Feb 02 2014

Status

approved