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%I M3912 #21 Mar 25 2024 12:06:07
%S 1,5,-21,33,-65,85,-133,161,261,-341,-481,533,-645,705,901,-12803,
%T -1281,-1541,1633,-1825,-14615,-11537,2581,-3201,3333
%N Coefficients of period polynomials.
%D D. H. and Emma Lehmer, Cyclotomy for nonsquarefree moduli, pp. 276-300 of Analytic Number Theory (Philadelphia 1980), Lect. Notes Math. 899 (1981).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H David Naccache and Ofer Yifrach-Stav, <a href="https://arxiv.org/abs/2301.01624">Pattern Recognition Experiments on Mathematical Expressions</a>, arXiv:2301.01624 [math.NT], 2022.
%H Ofer Yifrach-Stav, <a href="https://hal.science/tel-04513104">Fast and Private Pool Testing and Contributions to Experimental Mathematics</a>, Doctoral thesis, École normale supérieure (Paris, France), HAL Science [math.cs] 2024, Art. No. tel-04513104. See pp. 108, 109, 212.
%F a(n) = [x^(p-3)] f(p,x) where p = A000040(n) and f(p,x) is defined in A006308. - _Sean A. Irvine_, Mar 07 2017
%K sign,more
%O 2,2
%A _N. J. A. Sloane_.
%E More terms, signs added, and offset corrected by _Sean A. Irvine_, Mar 07 2017