A265931 Number of 3Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.

125, 4616, 17936, 72772, 273616, 1042020, 3883480, 14617920, 55503312, 210277584, 791400360, 2978940280, 11257286824, 42533780480, 160460490488, 604824610736, 2282902792488, 8619222724444, 32528290390168, 122688090414988

Offset: 1

Author

R. H. Hardin, Dec 18 2015

Keywords

• nonn

Comments

Row 3 of A265928.

Examples

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

Links

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

Crossrefs

Cf. A265928.