Table of n, a(n) for n=1..4.
Andrew Arnold and Michael Monagan, A highperformance algorithm for calculating cyclotomic polynomials, PASCO 2010. doi:10.1145/1837210.1837228
Andrew Arnold and Michael Monagan, A fast recursive algorithm for computing cyclotomic polynomials, ACM Commun. Comput. Algebra 44:3/4 (2010), pp. 8990. doi:10.1145/1940475.1940479
Andrew Arnold, Michael Monagan, Calculating cyclotomic polynomials, Mathematics of Computation 80 (276) (2011) 23592379 preprint.
Andrew Arnold and Michael Monagan, Cyclotomic Polynomials
