A206125 Number of (n+1)X6 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

6386, 93582, 1622095, 31537842, 619611200, 12251680342, 242348711498, 4795824388008, 94904217919185, 1878104997610024, 37166726586652989, 735509641479756842, 14555377036628179775, 288043173418928053016

Offset

1,1

Comments

Column 5 of A206128

Links

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

Example

Some solutions for n=4
..1..0..1..1..1..0....1..2..0..2..2..1....1..2..2..0..1..0....2..2..2..2..1..1
..1..1..1..2..1..1....2..1..2..1..0..2....2..1..0..1..0..1....0..1..2..1..1..2
..2..1..2..2..2..0....1..2..0..2..1..0....1..2..1..2..1..0....1..1..1..1..2..2
..2..2..2..0..2..2....2..0..1..0..2..1....2..0..2..0..2..1....1..2..1..2..2..0
..0..1..2..2..2..0....0..1..2..1..0..2....1..1..0..2..1..2....1..1..1..1..2..2

Crossrefs

Sequence in context: A237380 A251406 A278187 * A322935 A253825 A186068

Adjacent sequences: A206122 A206123 A206124 * A206126 A206127 A206128

Keyword

nonn

Author

R. H. Hardin Feb 04 2012

Status

approved