A206594 Number of (n+1)X2 0..3 arrays with every 2X3 or 3X2 subblock having no more than three equal edges, and new values 0..3 introduced in row major order

15, 171, 2532, 38810, 597829, 9217211, 142130380, 2191712741, 33797293408, 521171299118, 8036724854275, 123930361123673, 1911068840711956, 29469647972560031, 454436874891109270, 7007646425074694210

Offset

1,1

Comments

Column 1 of A206600

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 16*a(n-1) -14*a(n-2) +98*a(n-3) -312*a(n-4) +114*a(n-5) -585*a(n-6) +72*a(n-7) -324*a(n-8) for n>9

Example

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

Crossrefs

Sequence in context: A016172 A016225 A058687 * A354403 A152586 A339547

Adjacent sequences: A206591 A206592 A206593 * A206595 A206596 A206597

Keyword

nonn

Author

R. H. Hardin Feb 09 2012

Status

approved