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

1,1

Comments

Row 4 of A265928.

Links

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

Example

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

Crossrefs

Cf. A265928.

Sequence in context: A106321 A017332 A167039 * A017452 A223230 A017584

Adjacent sequences: A265929 A265930 A265931 * A265933 A265934 A265935

Keyword

nonn

Author

R. H. Hardin, Dec 18 2015

Status

approved