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A210175 Number of (n+1)X(n+1) 0..3 arrays containing all values 0..3 with every 2X2 subblock having three or four distinct values, and new values 0..3 introduced in row major order 0
1, 2316, 7363642, 178967377396, 35812805301833530, 59168572185919156908468, 807064033391082670768444038930, 90885346773699848616006199051130800984 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A210183

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A132214 A133538 A075668 * A137733 A205636 A347569

Adjacent sequences:  A210172 A210173 A210174 * A210176 A210177 A210178

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 18 2012

STATUS

approved

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Last modified May 17 23:07 EDT 2022. Contains 353779 sequences. (Running on oeis4.)