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Search: id:A086647
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| A086647 |
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Number of monomials in expansion of permanent of an n X n Toeplitz matrix [t(|i-j|) ] in terms of its entries. |
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+0
1
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| 1, 2, 4, 12, 36, 128, 460, 1750, 6551, 25108, 94977
(list; graph; listen)
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OFFSET
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1,2
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MATHEMATICA
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Permanent[m_List] := With[{v = Array[x, Length@m]}, Coefficient[Times @@ (m . v), Times @@ v]]; ; f[n_] := Length@Expand@Permanent@Table[t[Abs[i - j]], {i, n}, {j, n}]; Array[f, 11] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A019447.
Sequence in context: A048116 A009152 A081443 this_sequence A062161 A046993 A010551
Adjacent sequences: A086644 A086645 A086646 this_sequence A086648 A086649 A086650
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KEYWORD
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nonn
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AUTHOR
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Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 26 2003
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EXTENSIONS
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More terms from Robert G. Wilson v Sep 22 2006
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