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A253416 Number of (n+2)X(n+2) nonnegative integer arrays with all values the knight distance from the upper left minus as much as 1, with successive minimum path knight move differences either 0 or +1, and any unreachable value zero. 1
17, 131, 9985, 316686, 9787192, 118474944, 10608304158, 137343065266, 10377510294334, 104208752940208, 17201597741284536, 188513786701536807, 26630716056607954131, 232536991177649068440, 62398022471626643456428 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A253424.
LINKS
EXAMPLE
Some solutions for n=2
..0..3..1..4....0..3..1..4....0..3..2..4....0..2..2..4....0..3..2..4
..2..3..1..2....2..3..1..2....2..3..1..2....3..3..1..1....2..3..1..2
..2..1..3..2....2..1..3..2....2..1..3..2....1..1..3..2....2..1..3..2
..4..2..2..2....4..2..2..1....4..1..3..1....4..2..2..1....4..2..2..2
Knight distance matrix for n=2
..0..3..2..5
..3..4..1..2
..2..1..4..3
..5..2..3..2
CROSSREFS
Sequence in context: A158959 A355052 A259418 * A275483 A125354 A126512
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 31 2014
STATUS
approved

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Last modified February 21 05:17 EST 2024. Contains 370219 sequences. (Running on oeis4.)