A265927 Number of nX7 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.

17012, 1119424, 3883480, 13716476, 53801792, 238485164, 1135042936, 5759992224, 29783744648, 159386938728, 851999276304, 4668283409720, 25354240124600, 140755677796776, 771872865387920, 4322800211903112, 23867120132045176

Offset: 1

Author

R. H. Hardin, Dec 18 2015

Keywords

• nonn

Comments

Column 7 of A265928.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 48

Crossrefs

Cf. A265928.

Formula

Empirical recurrence of order 48 (see link above)