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|Number of cells||18|
|Discovered by||Dean Hickerson|
|Year of discovery||1989|
Monogram (or initials or JHC) is a period 4 oscillator that was found by Dean Hickerson in August 1989. It produces some weak sparks which can utilized in eg. the stabilization of the carnival shuttle.
- "Initials". The Life Lexicon. Stephen Silver. Retrieved on June 13, 2009.
- "JHC". The Life Lexicon. Stephen Silver. Retrieved on April 30, 2009.
- 18P4.1 at Heinrich Koenig's Game of Life Object Catalogs