A209958 Number of (n+1)X7 0..2 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences

2293335, 2551206049, 2818513213257, 3117032354510683, 3446585458126287199, 3811099763671947037073, 4214142277487028096606145, 4659813766542802148450765851, 5152616821080271113075357402295

Offset

1,1

Comments

Column 6 of A209960

Links

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

Example

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

Crossrefs

Sequence in context: A339937 A092017 A238079 * A324637 A186587 A358872

Adjacent sequences: A209955 A209956 A209957 * A209959 A209960 A209961

Keyword

nonn

Author

R. H. Hardin Mar 16 2012

Status

approved