A206317 Number of (n+1)X8 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero

25637095, 23019152735, 20808377921080, 18792437854613234, 16933907482183625564, 15245666610426961469352, 13716254602125340475868528, 12336975902231208201294106142, 11094395430478243136970514760806

Offset

1,1

Comments

Column 7 of A206318

Links

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

Example

Some solutions for n=3
..2..0..2..1..1..1..2..3....3..0..2..2..1..1..0..2....2..0..2..0..3..0..3..0
..0..2..1..0..3..2..1..1....1..2..1..0..3..2..1..3....2..1..3..1..0..1..0..1
..2..1..3..2..1..0..3..2....3..0..2..1..0..3..2..0....3..2..0..3..1..2..1..2
..3..2..0..3..2..1..0..3....2..2..3..2..1..0..3..1....2..1..1..0..2..0..2..1

Crossrefs

Sequence in context: A112130 A334373 A120702 * A184563 A231120 A340582

Adjacent sequences: A206314 A206315 A206316 * A206318 A206319 A206320

Keyword

nonn

Author

R. H. Hardin Feb 06 2012

Status

approved