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A206127 Number of (n+1)X8 0..2 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors 1
74714, 2591052, 112183711, 5199505646, 242348711498, 11329725297298, 529835514016558, 24790820344981160, 1159975079177724794, 54282106023803646726, 2540175779566884282117, 118872371638134536408162 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A206128

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A058415 A238521 A104846 * A230221 A252242 A210051

Adjacent sequences:  A206124 A206125 A206126 * A206128 A206129 A206130

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 04 2012

STATUS

approved

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Last modified May 24 14:36 EDT 2022. Contains 354037 sequences. (Running on oeis4.)