A185801 Number of (n+1)X4 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace

2176, 260544, 11019840, 593036512, 29410603520, 1501824774848, 75902079167968, 3849846787713472, 195020797157793152, 9883644801824753216, 500821360749453137312, 25378932404637289641888, 1286041655223168445633568

Offset

1,1

Comments

Column 3 of A185807

Links

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

Example

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

Crossrefs

Sequence in context: A252522 A159712 A186917 * A170776 A250240 A157476

Adjacent sequences: A185798 A185799 A185800 * A185802 A185803 A185804

Keyword

nonn

Author

R. H. Hardin Feb 04 2011

Status

approved