A geometric sequence, also called a geometric progression or geometrical progression, is a sequence 
, 
, 1, ..., in which each term after the first is the preceding
term multiplied by a fixed multiplier 
. For a sequence
whose terms are all nonzero, an equivalent definition
is that it is geometric iff it has zero series bias. If the multiplier
is 
,
then for 
the 
th
term is given by
 |
(1)
|
Taking 
gives the simple special case
 |
(2)
|
The Season 1 episode "Identity Crisis" (2005) of the television crime drama NUMB3RS mentions geometric progressions.
