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Alternating sextet (Posted on 2007-03-30) Difficulty: 3 of 5
In the sequence 1, 0, 1, 0, 1, 0, 3, 5... each member after the sixth one equals the units' digit of the sum of the six preceding numbers of the sequence.

Prove that the subsequence 0, 1, 0, 1, 0, 1, will never occur.

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  Subject Author Date
SolutionImprovement after 10 yearsSteve Herman2017-05-05 18:58:46
re: Brute force and luckFederico Kereki2007-03-31 11:45:55
Some ThoughtsBrute force and luckOld Original Oskar!2007-03-31 09:07:38
SolutionMore brute force (spoiler)Steve Herman2007-03-31 00:31:00
SolutionA Linux wayFederico Kereki2007-03-30 19:28:12
Solutionbrute force (spoiler)Charlie2007-03-30 14:44:01
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