4-barrelled p144 gun
This is a p144 gun based on an unnamed p72 oscillator found by
Bob Wainwright. Two copies of the p72 together with a blocker and
2 eaters can duplicate a glider. One output glider emerges in the
same direction as the original; the other is turned 90 degrees.
By putting together 4 such reflectors, a 4-barrelled gun can be
built with period 144+72N for any N>=0.
This was built by David Buckingham some time before 11/21/91.
(This header written by Dean Hickerson, 1/25/93)
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