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Oct 22, 2014 at 1:01 comment added Tom Copeland Yep. Thanks. For me, it's important to note that the totient gives the degree of the cyclotomic polynomials and that's why I was able to notice the regularity for the prime rows in analogy with that of the cyclotomic polynoms.
Oct 21, 2014 at 22:47 history edited Ira Gessel CC BY-SA 3.0
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Oct 21, 2014 at 22:18 comment added Tom Copeland Very neat. These little arithmetics are like hummingbirds to me--they don't visit my garden often, but when they do, I'm enchanted.
Oct 21, 2014 at 21:29 vote accept Tom Copeland
Oct 21, 2014 at 19:29 history edited Ira Gessel CC BY-SA 3.0
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Oct 21, 2014 at 18:55 history edited Ira Gessel CC BY-SA 3.0
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Oct 21, 2014 at 18:33 history edited Ira Gessel CC BY-SA 3.0
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Oct 21, 2014 at 18:11 history answered Ira Gessel CC BY-SA 3.0