

A089481


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!.


3



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

2,1


COMMENTS

T(n,n!)=1.


REFERENCES

SeokZun Song et al., Extremes of permanents of (0,1)matrices, Linear Algebra and its Applications 373, (2003), pp. 197210.


LINKS

Table of n, a(n) for n=2..60.


CROSSREFS

T(n, 0)=A088672(n). The nth 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


KEYWORD

nonn,tabf


AUTHOR

Hugo Pfoertner, Nov 09 2003


STATUS

approved



