A210296 Half the number of (n+1)X5 0..3 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference

312704, 194768054, 121040117840, 75244563204398, 46773822117508382, 29075895528477825602, 18074362569780907584746, 11235513600375237582792174, 6984299629532890008981374274, 4341629868067826124129752698278

Offset

1,1

Comments

Column 4 of A210300

Links

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

Example

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

Crossrefs

Sequence in context: A224631 A180461 A250371 * A214244 A102499 A234121

Adjacent sequences: A210293 A210294 A210295 * A210297 A210298 A210299

Keyword

nonn

Author

R. H. Hardin Mar 19 2012

Status

approved