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A206008 Number of (n+1)X7 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero 1
6688, 45810, 150396, 1159120, 3844878, 32546974, 107546742, 986871314, 3229296126, 31610481596, 102139460492, 1050320011472, 3348324332602, 35728606613158, 112397028073916, 1233453060486582, 3831555859611088 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A206010

LINKS

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

EXAMPLE

Some solutions for n=4

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

..1..2..2..1..1..2..2....1..1..2..2..2..2..2....2..2..2..1..1..1..1

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

..2..1..1..2..2..1..1....1..1..2..2..2..2..2....2..2..2..1..1..1..1

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

CROSSREFS

Sequence in context: A098936 A345601 A345860 * A031846 A289516 A239565

Adjacent sequences:  A206005 A206006 A206007 * A206009 A206010 A206011

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 02 2012

STATUS

approved

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Last modified October 27 02:00 EDT 2021. Contains 348270 sequences. (Running on oeis4.)