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Search: id:A034917
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| A034917 |
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Minimal determinant (negated) of n X n persymmetric matrix with entries {-1,0,+1}. |
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+0
5
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OFFSET
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1,2
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COMMENT
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A persymmetric (or Hankel) matrix has M[ i,j ] = M[ i-k,j+k ] for all i and j (matrix is constant along antidiagonals).
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EXAMPLE
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For n = 1, 2, 3 use the matrices
[ -1] [ -1 1] [ +1 -1 1]
..... [ +1 1] [ -1 +1 1]
............. [ +1 +1 1]
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CROSSREFS
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Cf. A034918-A034921.
Sequence in context: A128903 A103435 A119000 this_sequence A003433 A153951 A165905
Adjacent sequences: A034914 A034915 A034916 this_sequence A034918 A034919 A034920
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KEYWORD
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nonn,nice,more
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AUTHOR
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Fred Lunnon (fred(AT)csa5.cs.may.ie)
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EXTENSIONS
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More terms from Sam Handler (sam_5_5_5_0(AT)yahoo.com), Aug 08 2006
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