A265932 Number of 4Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.

625, 62696, 174000, 542940, 1546496, 4697060, 13716476, 42266448, 137268524, 432014132, 1349545464, 4231840236, 13782839880, 43359019136, 137060135072, 432317230340, 1404453869116, 4429418463040, 14067958304776, 44544242171944

Offset: 1

Author

R. H. Hardin, Dec 18 2015

Keywords

• nonn

Comments

Row 4 of A265928.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A265928.