A206520 Number of (n+1) X 8 0..3 arrays with every 2 X 3 or 3 X 2 subblock having no more than four equal edges, and new values 0..3 introduced in row major order.

177977851, 11534052523389, 747797195466172046, 48482197805424282951252, 3143262221646752596264102690, 203788158413867986023089008758269, 13212265000747034021229857133763537610

Offset

1,1

Comments

Column 7 of A206521.

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

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

Crossrefs

Cf. A206521.

Sequence in context: A300555 A306876 A213966 * A127955 A047738 A079323

Adjacent sequences: A206517 A206518 A206519 * A206521 A206522 A206523

Keyword

nonn

Author

R. H. Hardin, Feb 08 2012

Status

approved