A265935 Number of 7Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.

78125, 157071768, 152267520, 225444912, 309447168, 579039920, 1135042936, 2998567088, 8724089616, 18964065400, 44566825520, 107404139812, 337477736424, 721835834136, 1878102206024, 4325671914740, 13771113959216, 29460813516752

Offset: 1

Author

R. H. Hardin, Dec 18 2015

Keywords

• nonn

Comments

Row 7 of A265928.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..35

Crossrefs

Cf. A265928.