A206230 Number of (n+1)X(n+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly two equal edges, and new values 0..3 introduced in row major order

15, 256, 4456, 283728, 10915392, 1448239080, 649065145152, 203396423662488, 222950396746461504, 842104767130879914696, 2305567526828592241306992, 22136848571138455592306188104, 737206270850592131066195723493312

Offset

1,1

Comments

Diagonal of A206238

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

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

Crossrefs

Sequence in context: A027775 A334995 A099273 * A209263 A180832 A361185

Adjacent sequences: A206227 A206228 A206229 * A206231 A206232 A206233

Keyword

nonn

Author

R. H. Hardin Feb 05 2012

Status

approved