OFFSET
2,2
COMMENTS
A 365-day year and a uniform distribution of birthdays throughout the year are assumed.
LINKS
Patrice Le Conte, Coincident Birthdays.
Mathforum at Drexel, The Birthday Problem, Ask Dr. Math: FAQ.
Eric Weisstein's World of Mathematics, Birthday Problem.
FORMULA
Q(n) = (1 - Product_{i=1..n-1} (1-i/365))*365^(n-1).
MATHEMATICA
Q[n_] := (1 - Product[(1 - i/365), {i, 1, n - 1}])365^(n - 1); Table[ Q[n], {n, 2, 13}] (* Robert G. Wilson v, Feb 05 2004 *)
CROSSREFS
KEYWORD
frac,nonn
AUTHOR
Hugo Pfoertner, Feb 03 2004
EXTENSIONS
More terms from Robert G. Wilson v, Feb 05 2004
STATUS
approved