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Search: id:A034918
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| A034918 |
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Maximal determinant of n X n persymmetric matrix with entries {-1,0,+1}. |
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+0
3
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OFFSET
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1,3
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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
[1] [1 0] [ -1 +1 -1]
... [0 1] [ +1 -1 -1]
......... [ -1 -1 -1]
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CROSSREFS
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Cf. A034917-A034921.
Sequence in context: A131126 A159964 A058922 this_sequence A119003 A119005 A086601
Adjacent sequences: A034915 A034916 A034917 this_sequence A034919 A034920 A034921
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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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