A206053 Number of (n+1)X8 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one

1023822, 123893883, 12614174310, 1240395191991, 119812800012048, 11507134891499922, 1102253485190936160, 105478568485864252029, 10089023219129959566042, 964846823079030872200197

Offset

1,1

Comments

Column 7 of A206054

Links

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

Example

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

Crossrefs

Sequence in context: A074667 A235159 A235695 * A263129 A241790 A143133

Adjacent sequences: A206050 A206051 A206052 * A206054 A206055 A206056

Keyword

nonn

Author

R. H. Hardin Feb 03 2012

Status

approved