A209967 Number of (n+1)X7 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order

17262, 3745144, 795773818, 176163769267, 38303320167422, 8191570949391204, 1725096441495004196, 358792884816460002669, 73884793608220074063313, 15095735190392461348923878, 3065184253013978227031816509

Offset

1,1

Comments

Column 6 of A209969

Links

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

Example

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

Crossrefs

Sequence in context: A076774 A236447 A094413 * A093790 A229683 A228379

Adjacent sequences: A209964 A209965 A209966 * A209968 A209969 A209970

Keyword

nonn

Author

R. H. Hardin Mar 16 2012

Status

approved