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A209847 Number of (n+1)X8 0..3 arrays with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order 1
326123, 108170155, 38265187051, 14575079152523, 5674369527018763, 2236023641962912731, 886072158946966616059, 352155097625024889148571, 140172370468095791726293883, 55840739584103536425301543483 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A209848

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A237223 A250910 A015360 * A237306 A210387 A269901

Adjacent sequences:  A209844 A209845 A209846 * A209848 A209849 A209850

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 14 2012

STATUS

approved

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Last modified January 17 06:12 EST 2022. Contains 350378 sequences. (Running on oeis4.)