Due to its interference with the quadrant's nucleus, only a single arm may exist per quadrant. There exists a heptomino, that acts as a p3 oscillator partial but can mutually stabilise with a quadrant of the pulsar's nucleus, replacing a standard horn in its blinker phase to comprise an 'arm' and causing it to undergo a different period-3 evolutionary sequence. The pulsar (left), cross (center) and bracket pulsar (right) Please enable Javascript to view this LifeViewer. It was found by John Conway in March 1970. Pulsar (rarely referred to as Cambridge pulsar CP 48-56-72 ) is a large but surprisingly common period-3 oscillator.
