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Date: 30-1-2022
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A plot of the cells on a grid satisfying bitwise for consecutive values of , 2, .... It is thought that it was discovered by Jackson Wright on the RLE PDP-1 around 1962 (Beeler et al. 1972). The plots above show the results in static and animated form for to 15 on a grid running from 0 to 15.
Beeler et al. Item 146 in Beeler, M.; Gosper, R. W.; and Schroeppel, R. HAKMEM. Cambridge, MA: MIT Artificial Intelligence Laboratory, Memo AIM-239, p. 72, Feb. 1972.
http://www.inwap.com/pdp10/hbaker/hakmem/hacks.html#item146.Schroeppel, R. Item 147 in Beeler, M.; Gosper, R. W.; and Schroeppel, R. HAKMEM. Cambridge, MA: MIT Artificial Intelligence Laboratory, Memo AIM-239, p. 72, Feb. 1972.
http://www.inwap.com/pdp10/hbaker/hakmem/hacks.html#item147.Wolfram, S. A New Kind of Science. Champaign, IL: Wolfram Media, p. 871, 2002.
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