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A209846 Number of (n+1)X7 0..3 arrays with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order 1
50987, 8743851, 1569132907, 299013108267, 57996585929227, 11360964645748987, 2236023641962912731, 441217186235837857275, 87185885989797413867867, 17242469799670707579743515, 3411677740542012016899044731 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 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..0..1..2....0..0..1..1..0..0..1....0..0..1..0..0..0..2

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

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

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

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

CROSSREFS

Sequence in context: A185379 A204729 A277344 * A237222 A178283 A252207

Adjacent sequences:  A209843 A209844 A209845 * A209847 A209848 A209849

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 14 2012

STATUS

approved

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Last modified February 26 00:08 EST 2020. Contains 332270 sequences. (Running on oeis4.)