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A210308 Number of (n+1)X8 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 1
4266246, 7657326365, 13436313660615, 23591932615876019, 41416867662718913763, 72710583058655511309563, 127648944948853198818703027, 224097463695162713946579883851 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A210309

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..171

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A209395 A159714 A232351 * A205271 A234168 A015349

Adjacent sequences:  A210305 A210306 A210307 * A210309 A210310 A210311

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 19 2012

STATUS

approved

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Last modified September 18 01:28 EDT 2021. Contains 347504 sequences. (Running on oeis4.)