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A265935
Number of 7Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.
1
78125, 157071768, 152267520, 225444912, 309447168, 579039920, 1135042936, 2998567088, 8724089616, 18964065400, 44566825520, 107404139812, 337477736424, 721835834136, 1878102206024, 4325671914740, 13771113959216, 29460813516752
OFFSET
1,1
COMMENTS
Row 7 of A265928.
LINKS
EXAMPLE
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
CROSSREFS
Cf. A265928.
Sequence in context: A017047 A017131 A017227 * A017335 A017455 A017587
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 18 2015
STATUS
approved