A184208 Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock sum greater than 6

106, 30994, 57181621, 977644225220, 125027563003468383, 133077056896640920382417, 1119067166994635331073741846565

Offset

1,1

Comments

Diagonal of A184217

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for 3X3
..3..0..2....2..1..3....2..3..1....2..2..0....2..2..2....3..2..3....3..1..2
..2..3..2....2..2..3....3..3..1....2..2..3....3..3..2....1..1..1....3..3..3
..3..1..3....1..3..1....1..2..1....0..3..1....1..3..3....2..3..2....3..3..2

Crossrefs

Sequence in context: A223497 A078281 A253622 * A082177 A156020 A160487

Adjacent sequences: A184205 A184206 A184207 * A184209 A184210 A184211

Keyword

nonn

Author

R. H. Hardin Jan 10 2011

Status

approved