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A210301 Number of (n+1)X(n+1) 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or three distinct values, and new values 0..3 introduced in row major order 0
0, 1091, 1575467, 11061291451, 437971830335043, 98959142504758664603, 127648944948853198818703027, 940014634185937826679488616180507 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A210309

LINKS

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

EXAMPLE

Some solutions for n=4

..0..0..0..0..1....0..0..0..0..1....0..1..0..0..0....0..1..0..0..0

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

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

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

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

CROSSREFS

Sequence in context: A161118 A031711 A253216 * A043597 A043837 A043849

Adjacent sequences:  A210298 A210299 A210300 * A210302 A210303 A210304

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 19 2012

STATUS

approved

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Last modified February 26 21:58 EST 2020. Contains 332295 sequences. (Running on oeis4.)