#patterned_advance__patternedadvance__progression  a series with a definite pattern of advance
  supertype:  series  similar things placed in order or happening one after another; "they were investigating a series of bank robberies"
  subtype:  arithmetic_progression  (math) a progression in which a constant is added to each term in order to obtain the next term; "1-4-7-10-13- is the start of an arithmetic progression"
  subtype:  geometric_progression__geometricprogression  (math) a progression in which each term is multiplied by a constant in order to obtain the next term; "1-4-16-64-256- is the start of a geometric progression"
  subtype:  harmonic_progression  (math) a progression of terms whose reciprocals form an arithmetic progression

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