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A210078 Number of (n+1)X(n+1) 0..3 arrays containing all values 0..3 with every 2X2 subblock having one, three or four distinct values, and new values 0..3 introduced in row major order 0
1, 2384, 7853122, 198214365329, 41562565414532492, 72599208478326114502304, 1056388250136945583891331683046, 128049790734830830744725613641587707522 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A210086

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A218849 A254562 A186867 * A172653 A172677 A172772

Adjacent sequences:  A210075 A210076 A210077 * A210079 A210080 A210081

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 17 2012

STATUS

approved

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Last modified September 23 14:40 EDT 2021. Contains 347618 sequences. (Running on oeis4.)