cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A140671 Numbers useful in computing A(k), the largest possible magnitude of the x^k coefficient in a cyclotomic polynomial.

Original entry on oeis.org

150, 820, 2751, 9298, 18016, 38907, 62286, 110681
Offset: 3

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Author

T. D. Noe, May 21 2008

Keywords

Comments

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?