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|Number of cells||23|
|Year of discovery||Unknown|
Pentoad 1H2 is a period 5 oscillator that is is a hybrid of pentoad and pentoad 2. It is extensible in a similar manner. The '1' and '2' in the name refer to the types of pentoad ends in the pattern. The 'H' refers to the one hexomino in middle.
- 23P5.1 at Heinrich Koenig's Game of Life Object Catalogs