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Search: id:A040173
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| A040173 |
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Numerator of probability that 2 elements of S_n chosen at random (with replacement) generate S_n. |
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+0
3
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OFFSET
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1,2
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LINKS
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Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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EXAMPLE
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Values for n=1,2,3,... are 1, 3/4, 1/2, 3/8, 19/40, ...
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CROSSREFS
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Probability is A040173/A040174 = A040175/n!.
Sequence in context: A126970 A001351 A112811 this_sequence A128777 A067009 A110790
Adjacent sequences: A040170 A040171 A040172 this_sequence A040174 A040175 A040176
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KEYWORD
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nonn,frac
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AUTHOR
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Dan Hoey (Hoey(AT)aic.nrl.navy.mil)
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