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A235964 Number of (n+1)X(n+1) 0..3 arrays colored with the upper median value of each 2X2 subblock 0
256, 16744, 872370, 77914322, 13646551852, 4295779203418, 2687792393159216, 3200041068440354630 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A235972

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=2

..1..1..0....0..2..3....0..1..1....1..0..0....3..1..2....3..0..3....2..3..0

..0..0..0....0..3..1....0..2..3....3..2..0....3..2..1....0..2..3....1..1..1

..0..2..2....3..1..1....0..0..3....1..3..2....1..0..0....1..0..0....0..3..2

CROSSREFS

Sequence in context: A224206 A238064 A176764 * A206319 A216397 A090650

Adjacent sequences:  A235961 A235962 A235963 * A235965 A235966 A235967

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 17 2014

STATUS

approved

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Last modified October 20 20:08 EDT 2019. Contains 328271 sequences. (Running on oeis4.)