A236621 Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the lower median of every 2X2 subblock

2624, 50000, 914808, 16988098, 316897424, 5943956586, 111193237764, 2076868598026, 38825560596218, 726292336006660, 13580276910279300, 253878029634452090, 4747015954319569168, 88764643545430357644

Offset

1,1

Comments

Column 2 of A236624

Links

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

Example

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

Crossrefs

Sequence in context: A139675 A292175 A295482 * A221941 A234698 A190936

Adjacent sequences: A236618 A236619 A236620 * A236622 A236623 A236624

Keyword

nonn

Author

R. H. Hardin, Jan 29 2014

Status

approved