A253619 Number of (4+2)X(n+2) 0..2 arrays with every consecutive three elements in every row and diagonal having one or two distinct values, and in every column and antidiagonal having two or three distinct values, and new values 0 upwards introduced in row major order

1100582, 48041910, 1985951362, 82792688911, 3506966814980, 148257123839810, 6260570618264406, 264744653877921902, 11194827783222181524, 473331142737885943910, 20015539042538800258800, 846393786041014883556876

Offset

1,1

Comments

Row 4 of A253615

Links

R. H. Hardin, Table of n, a(n) for n = 1..41

Example

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

Crossrefs

Sequence in context: A184384 A086212 A316481 * A235221 A060087 A229783

Adjacent sequences: A253616 A253617 A253618 * A253620 A253621 A253622

Keyword

nonn

Author

R. H. Hardin, Jan 05 2015

Status

approved