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A206509 Number of (n+1)X6 0..2 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards 1
111495, 10505604, 769739571, 47830788954, 2671430859687, 138401623325535, 6781274991216915, 318257080720663863, 14433205926606629808, 636578185379733865623, 27437199789684970128768, 1159984309083884155349523 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A206512

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..122

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A228253 A179919 A296370 * A033446 A033447 A203667

Adjacent sequences:  A206506 A206507 A206508 * A206510 A206511 A206512

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 08 2012

STATUS

approved

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Last modified May 19 17:01 EDT 2019. Contains 323395 sequences. (Running on oeis4.)