A205924 Number of (n+1)X7 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero

215294, 4085161, 22176946, 535691452, 2853968414, 88272553560, 454195592550, 16886828676263, 84210499905622, 3496356219518227, 17017031345808388, 751139677139537584, 3586967937464808168, 164035122758416628806

Offset

1,1

Comments

Column 6 of A205926

Links

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

Example

Some solutions for n=4
..0..1..3..2..0..2..3....3..0..3..1..3..2..3....1..0..1..1..3..1..3
..1..1..1..2..2..2..2....3..3..3..3..3..3..3....1..1..1..2..3..3..3
..3..1..2..2..1..2..3....0..1..3..1..3..1..2....0..1..2..2..2..3..2
..1..1..1..2..2..2..2....1..1..1..1..1..1..1....1..1..1..2..3..3..0
..2..0..1..1..2..3..1....3..0..1..3..0..1..2....3..1..2..2..2..3..3

Crossrefs

Sequence in context: A083639 A272410 A118875 * A203730 A273219 A351662

Adjacent sequences: A205921 A205922 A205923 * A205925 A205926 A205927

Keyword

nonn

Author

R. H. Hardin Feb 01 2012

Status

approved