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A205996 Number of (n+1)X7 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero 1
15252, 445352, 13324720, 403768668, 12247835464, 372736115952, 11329617750556, 344896522846756, 10488581198699106, 319255436413700648, 9710750954285060690, 295543172702892331212, 8990520513073214869046 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A205998

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A233924 A115924 A251952 * A296087 A252318 A233602

Adjacent sequences:  A205993 A205994 A205995 * A205997 A205998 A205999

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 02 2012

STATUS

approved

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Last modified June 12 08:13 EDT 2021. Contains 344943 sequences. (Running on oeis4.)