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A089481
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Triangle T(n,k) read by rows, where T(n,k) = number of times the permanent of a real singular n X n (0,1)-matrix takes the value k, for n >= 2, 0 <= k <= n!.
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3
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9, 0, 1, 265, 0, 63, 0, 9, 0, 1, 27713, 0, 9360, 0, 3582, 0, 1248, 0, 648, 0, 288, 0, 48, 0, 72, 0, 0, 0, 16, 0, 0, 0, 0, 0, 1, 10363361, 0, 3645600, 0, 2411250, 0, 1404800, 0, 1043700, 0, 682200, 0, 417100, 0, 336600, 0, 177750, 0, 183400, 0, 85950, 0, 60000, 0
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OFFSET
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2,1
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COMMENTS
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T(n,n!)=1.
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REFERENCES
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Seok-Zun Song et al., Extremes of permanents of (0,1)-matrices, Linear Algebra and its Applications 373, (2003), pp. 197-210.
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LINKS
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Table of n, a(n) for n=2..60.
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CROSSREFS
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T(n, 0)=A088672(n). The n-th row of the table contains A089476(n) nonzero entries. Cf. A089479 occurrence counts for permanents of all (0, 1)-matrices.
Sequence in context: A189186 A221429 A221507 * A188593 A065421 A198556
Adjacent sequences: A089478 A089479 A089480 * A089482 A089483 A089484
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KEYWORD
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nonn,tabf
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AUTHOR
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Hugo Pfoertner, Nov 09 2003
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STATUS
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approved
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