Pseudorandom number generator with p46 logic A glider stream is emitted representing a pseudorandom binary sequence satisfying the recursion a[n] = a[n-1] XOR a[n-12]. (By spreading out the pattern, the 12 can be changed.) The sequence has period 3255, so the gun has period 46*3255 = 149730. Built by Bill Gosper, October 1989 or earlier (Header by Dean Hickerson, 4/11/93)