A185606 Number of (n+1)X3 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant

580, 11354, 172026, 3017724, 50646550, 873299900, 14968118872, 257702828288, 4434550428074, 76378569041134, 1315590805788744, 22665378299857764, 390507753481807752, 6728559224542235420, 115937828489606023230

Offset

1,1

Comments

Column 2 of A185609

Links

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

Example

Some solutions for 5X3
..0..0..0....0..0..2....0..0..3....0..0..3....0..0..0....0..0..1....0..0..2
..0..0..1....0..0..2....0..0..1....0..0..0....0..0..2....0..0..2....0..0..2
..0..0..0....2..0..2....3..3..2....1..2..2....1..0..3....0..0..0....1..0..2
..0..2..2....2..1..1....3..3..1....0..0..0....2..0..1....0..0..0....1..0..2
..1..2..1....2..2..0....2..3..2....1..0..1....2..0..2....0..3..0....2..0..1

Crossrefs

Sequence in context: A127694 A185605 A186784 * A206616 A172763 A172835

Adjacent sequences: A185603 A185604 A185605 * A185607 A185608 A185609

Keyword

nonn

Author

R. H. Hardin Jan 31 2011

Status

approved