A186918 Number of (n+1)X5 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces

30976, 4615296, 394724320, 39825200832, 3861027028096, 380882328583712, 37393297725524928, 3676830716968217056, 361403949822499656288, 35524816137109522769760, 3492117188458641402526656

Offset

1,1

Comments

Column 4 of A186923

Links

R. H. Hardin, Table of n, a(n) for n = 1..48

Example

Some solutions for 3X5
..0..0..3..0..1....2..2..1..2..2....0..2..1..2..2....0..1..3..3..2
..2..0..0..0..3....2..2..1..2..0....2..2..1..2..1....2..2..1..3..3
..0..0..2..2..2....0..2..2..1..0....0..0..0..3..2....0..2..2..3..1

Crossrefs

Sequence in context: A071124 A250590 A338948 * A185802 A102328 A157111

Adjacent sequences: A186915 A186916 A186917 * A186919 A186920 A186921

Keyword

nonn

Author

R. H. Hardin Feb 28 2011

Status

approved