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A261406 Numbers n such that the norm of Phi_n(alpha), the n-th cyclotomic polynomial evaluated at alpha, is +-1, where alpha is the Salem number defined in A073011. 0

%I #5 Aug 22 2015 12:49:42

%S 1,2,3,5,6,7,8,9,10,11,13,16,17,18,20,21,23,24,27,28,29,30,34,37,38,

%T 40,42,44,45,47,50,52,56,57,60,63,65,66,70,74,75,76,78,84,86,92,96,98,

%U 105,110,118,132,138,144,154,160,165,186,195,204,212,240,270,286,360

%N Numbers n such that the norm of Phi_n(alpha), the n-th cyclotomic polynomial evaluated at alpha, is +-1, where alpha is the Salem number defined in A073011.

%D Cohen, Henri, Leonard Lewin, and Don Zagier. "A sixteenth-order polylogarithm ladder." Experimental Mathematics 1.1 (1992): 25-34.

%Y Cf. A073011.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Aug 22 2015

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)