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A236621 Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the lower median of every 2X2 subblock 1
2624, 50000, 914808, 16988098, 316897424, 5943956586, 111193237764, 2076868598026, 38825560596218, 726292336006660, 13580276910279300, 253878029634452090, 4747015954319569168, 88764643545430357644 (list; graph; refs; listen; history; text; internal format)
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

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Last modified November 30 22:31 EST 2021. Contains 349426 sequences. (Running on oeis4.)