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dalke
on March 15, 2016
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A previously unnoticed property of prime numbers
That's a De Bruijn sequence. See
https://en.wikipedia.org/wiki/De_Bruijn_sequence
. A example applied to door codes is at
http://stefangeens.com/2001-2013/2004/10/the-de-bruijn-code/
. A search for "De Bruijn garage door" finds a couple of examples of what you mentioned.
aidenn0
on March 15, 2016
[–]
Thanks for the name, with it I was able to find the article I was thinking of:
http://samy.pl/opensesame/
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