A186548 1/8192 the number of (n+2)X4 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace

290, 19016, 1279862, 88662978, 6215002266, 435599518160, 30577245619492, 2145961447892386, 150629240515340670, 10572567332219259666, 742094548656309697042, 52087780768510204956480, 3656060603655477820657112

Offset

1,1

Comments

Column 2 of A186553

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 6X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..2..0..0..0....0..0..0..0....0..0..0..0....3..0..0..0....2..0..0..0
..3..0..0..0....3..0..0..0....3..0..0..0....2..0..0..0....0..0..0..0
..0..1..2..0....1..1..0..0....2..1..0..0....2..0..0..0....0..2..0..0
..0..0..0..2....0..3..1..2....0..0..0..2....0..0..1..0....0..0..0..0
..2..2..2..1....1..1..1..0....3..1..2..1....1..3..0..1....3..1..2..0

Crossrefs

Sequence in context: A237741 A335613 A369396 * A091740 A098250 A031515

Adjacent sequences: A186545 A186546 A186547 * A186549 A186550 A186551

Keyword

nonn

Author

R. H. Hardin Feb 23 2011

Status

approved