Numerator of ratio (the denominator being (n-1)!^2 = A001044(n-1)) giving the probability that the last of n persons drawing names randomly from a set of names draws their own, given that each person previously has drawn in succession and did not keep their own name. (Probability of derangements when allocated / rejected sequentially.)
A136300
Numerator of ratio (the denominator being (n-1)!^2 = A001044(n-1)) giving the probability that the last of n persons drawing names randomly from a set of names draws their own, given that each person previously has drawn in succession and did not keep their own name. (Probability of derangements when allocated / rejected sequentially.)
Terms
- a(0) =1a(1) =0a(2) =1a(3) =5a(4) =76a(5) =1624a(6) =52116a(7) =2298708a(8) =133929216a(9) =9961180416a(10) =921248743680
External references
- oeis: A136300