Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #2 Mar 30 2012 17:22:50
%S 150,820,2751,9298,18016,38907,62286,110681
%N Numbers useful in computing A(k), the largest possible magnitude of the x^k coefficient in a cyclotomic polynomial.
%C The values of A(k) are in sequence A138474. The least order N(k) of the cyclotomic polynomial producing A(k) is A138475(k). For k >= a(n), computational experiments have shown that only primes >= prime(n) divide N(k). These terms were determined empirically; is there another way of characterizing these numbers?
%K nonn
%O 3,1
%A _T. D. Noe_, May 21 2008