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A040174
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Denominator of probability that 2 elements of S_n chosen at random (with replacement) generate S_n.
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3
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OFFSET
| 1,2
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LINKS
| Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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EXAMPLE
| Values for n=1,2,3,... are 1, 3/4, 1/2, 3/8, 19/40, ...
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CROSSREFS
| Probability is A040173/A040174 = A040175/n!.
Sequence in context: A130078 A204449 A172393 * A084477 A046589 A072562
Adjacent sequences: A040171 A040172 A040173 * A040175 A040176 A040177
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KEYWORD
| nonn,frac,nice
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AUTHOR
| Dan Hoey (Hoey(AT)aic.nrl.navy.mil)
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