A236975 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal

6024, 76212, 898820, 11850502, 151656752, 2025835812, 26630922346, 357532653542, 4755836009162, 64003985025026, 856771671964444, 11547914807203730, 155175900645701946, 2093923309757087606

Offset

1,1

Comments

Column 3 of A236979

Links

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

Example

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

Crossrefs

Sequence in context: A143043 A031605 A239176 * A206113 A237864 A031821

Adjacent sequences: A236972 A236973 A236974 * A236976 A236977 A236978

Keyword

nonn

Author

R. H. Hardin, Feb 02 2014

Status

approved