A265592 Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.

3, 79, 9327, 927797, 82725668, 12404184853, 1961916558139, 205199911524811, 32566506281706134, 3625304390972323537, 618755342504397622109, 87849263845468588422281, 14938881681298157851105131

Offset

1,1

Comments

Row 3 of A265590.

Links

R. H. Hardin, Table of n, a(n) for n = 1..112

Example

Some solutions for n=3
..0..8..0....0..4..6....0..8..0....0..4..0....0..4..5....0..1..0....0..4..5
..0..1..5....6..4..8....0..4..5....3..2..3....5..4..3....5..1..3....6..7..8
..2..6..8....8..6..8....5..6..8....6..7..8....3..4..8....0..4..8....5..4..8

Crossrefs

Cf. A265590.

Sequence in context: A062660 A331673 A065399 * A105065 A011187 A327250

Adjacent sequences: A265589 A265590 A265591 * A265593 A265594 A265595

Keyword

nonn

Author

R. H. Hardin, Dec 10 2015

Status

approved