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A209895 Number of (n+1)X7 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order 1
18464, 1293568, 97195728, 7597233712, 602072007808, 48053885453696, 3846901518589376, 308412624303464672, 24742329866927987152, 1985576485098483414896, 159366143592030604947408 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A209897

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A231142 A251874 A035924 * A190110 A157738 A247205

Adjacent sequences:  A209892 A209893 A209894 * A209896 A209897 A209898

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 14 2012

STATUS

approved

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Last modified January 20 03:25 EST 2022. Contains 350467 sequences. (Running on oeis4.)