A240700 Number of n X n 0..3 arrays with no element equal to a different number of vertical neighbors than horizontal neighbors, with new values 0..3 introduced in row major order

1, 5, 461, 332412, 1382959986, 33101173163229, 4557765530585124406, 3610256703332068651606556

Offset

1,2

Comments

Diagonal of A240706

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A332145 A144509 A375262 * A060855 A212043 A182403

Adjacent sequences: A240697 A240698 A240699 * A240701 A240702 A240703

Keyword

nonn

Author

R. H. Hardin, Apr 10 2014

Status

approved