If n cards are dealt from a well shuffled deck, how likely is it that all 4 suits
will be represented by at least one card?

The following Excel spread sheet image is based on calculations made by a FORTRAN program
that I wrote on 8/4/2006.  The source code is allsuits.for.  These results agree with the output of
another program that repeatedly dealt cards from a pseudo-randomly shuffled deck.

The corresponding Excel spread sheet file.