A265921 Number of n X n 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.

5, 340, 17936, 542940, 8821464, 112139348, 1135042936, 15078628680, 249568483336, 2294594493868, 25866958553904

Offset: 1

Author

R. H. Hardin, Dec 18 2015

Keywords

• nonn

Comments

Diagonal of A265928.

Examples

			Some solutions for n=3
..3..1..4....1..1..4....0..4..3....3..1..1....2..4..3....0..1..1....0..4..3
..2..4..1....3..0..2....1..1..4....4..3..3....0..3..1....3..0..2....2..3..0
..0..3..4....1..3..0....0..4..3....0..0..4....4..1..3....4..1..3....1..0..4
		

Crossrefs

Cf. A265928.