A206755 Number of (n+1)X3 0..2 arrays with every 2X3 or 3X2 subblock having no more than three equal edges, and new values 0..2 introduced in row major order

106, 2187, 46860, 1002015, 21403411, 457325164, 9771502433, 208781853511, 4460929715062, 95314283208603, 2036528732366433, 43513408950473466, 929727495885160693, 19864984988374035589, 424444399488287893292

Offset

1,1

Comments

Column 2 of A206761

Links

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

Formula

Empirical: a(n) = 16*a(n-1) +86*a(n-2) +577*a(n-3) +694*a(n-4) +1376*a(n-5) -823*a(n-6) +136*a(n-7) -2266*a(n-8) -461*a(n-9) -1230*a(n-10)

Example

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

Crossrefs

Sequence in context: A184209 A373133 A233047 * A200969 A234413 A083963

Adjacent sequences: A206752 A206753 A206754 * A206756 A206757 A206758

Keyword

nonn

Author

R. H. Hardin Feb 12 2012

Status

approved