ExponentialGeneratingFunction[expr, n, x] gives the exponential generating function in x for the sequence whose n\[Null]^th term is given by the expression ...
Floor
(Built-in Mathematica Symbol) Floor[x] gives the greatest integer less than or equal to x. Floor[x, a] gives the greatest multiple of a less than or equal to x.
FoldList[f, x, {a, b, ...}] gives {x, f[x, a], f[f[x, a], b], ...}.
GeneratingFunction[expr, n, x] gives the generating function in x for the sequence whose n\[Null]^th series coefficient is given by the expression ...
NestList[f, expr, n] gives a list of the results of applying f to expr 0 through n times.
Panel
(Built-in Mathematica Symbol) Panel[expr] displays as a panel containing expr. Panel[expr, title] gives the panel the specified title. Panel[expr, title, pos] places title at a position specified by pos. ...
StringSplit["string"] splits " string" into a list of substrings separated by whitespace. StringSplit["string", patt] splits into substrings separated by delimiters matching ...
Mathematica normally makes as few assumptions as possible about the objects you ask it to manipulate. This means that the results it gives are as general as possible. But ...
HypergeometricDistribution[n, n_succ, n_tot] represents a hypergeometric distribution.
KnotData[knot, " property"] gives the specified property for a knot.KnotData[knot] gives an image of the knot.KnotData["class"] gives a list of knots in the specified class.