A231124 Number of (n+1)X(n+1) white-square subarrays of 0..2 arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order

1, 8, 308, 27664, 6794904, 4614346288, 8349491299560, 42088669314695072, 564457878709147238868, 21095556114328677203104400, 2097381737046509117354544061212, 581111029966060833293204483082983504

Offset

1,2

Comments

Diagonal of A231131

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Sequence in context: A222091 A193812 A222095 * A081980 A264661 A231781

Adjacent sequences: A231121 A231122 A231123 * A231125 A231126 A231127

Keyword

nonn

Author

R. H. Hardin, Nov 04 2013

Status

approved