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

6688, 45810, 150396, 1159120, 3844878, 32546974, 107546742, 986871314, 3229296126, 31610481596, 102139460492, 1050320011472, 3348324332602, 35728606613158, 112397028073916, 1233453060486582, 3831555859611088

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 * A358869 A031846 A289516

Adjacent sequences: A206005 A206006 A206007 * A206009 A206010 A206011

Keyword

nonn

Author

R. H. Hardin Feb 02 2012

Status

approved