A229846 - OEIS

A229846

Number of nX7 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j)

63, 63291, 31783299, 17324310663, 9366963651897, 5071373978989773, 2745117942652795617, 1485981308554100717397, 804382842721296064467525, 435424391066549741979527775, 235701650566916249474911785897

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OFFSET

1,1

COMMENTS

Column 7 of A229847

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A136677 A135812 A069452 * A230674 A229933 A230175

Adjacent sequences: A229843 A229844 A229845 * A229847 A229848 A229849

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 01 2013

STATUS

approved