Sequence()
This command is not only for constructing sequence of numbers but also for constructing sequence of objects.
In computational meaning, Sequence() is the function for constructing "list" data structure.
In mathematical meaning, Sequece() is the function for constructing finite orderd set.
Sequence( <End Value> )
Sequence( <Start Value>, <End Value> )
Sequence( <Start Value>, <End Value>, <Increment> )
Sequence( <Expression>, <Variable>, <Start Value>, <End Value> )
Sequence( <Expression>, <Variable>, <Start Value>, <End Value>, <Increment> )