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A210181 Number of (n+1)X7 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 1
1165620, 2632469015, 5718695139568, 12464481048826696, 27156404404201709994, 59168572185919156908468, 128916198764977919097970016, 280882175302896412528199673868, 611985080884296074533935641104282 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A210183
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..0..0..1..0....0..0..0..0..0..0..0....0..0..0..0..0..0..1
..0..2..3..1..2..0..3....1..2..1..2..1..2..1....2..1..2..1..3..1..3
..1..3..0..1..0..1..3....0..2..3..1..0..3..1....3..1..3..3..0..1..0
..2..3..1..3..2..2..1....0..1..0..0..2..1..2....0..1..0..1..1..2..3
..1..3..2..0..1..0..3....0..3..3..1..1..0..1....3..0..3..2..3..2..1
CROSSREFS
Sequence in context: A339982 A234554 A192104 * A204307 A233664 A322690
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 18 2012
STATUS
approved

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Last modified December 7 09:26 EST 2023. Contains 367645 sequences. (Running on oeis4.)