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A230378 The right Aurifeuillian factor of n^n - 1 for n congruent to 1 mod 4 and squarefree. 1
71, 13993643, 19152352117, 227633407, 813955076015309926319, 4098986195943739, 46959719470144429555105032871, 491873569944394295636860313807677, 1848593595048531176470116001230356265643249547, 108685909290746311448943506365699 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The values of n are given by A005117, except for the leading 1.

LINKS

Table of n, a(n) for n=1..10.

Richard P. Brent, On computing factors of cyclotomic polynomials

EXAMPLE

13993643 is in the sequence because it is an Aurifeuillian factor of 13^13-1.

CROSSREFS

Cf. A005117, A220983, A220984, A230375-A230377, A230376.

Sequence in context: A078915 A144242 A144360 * A093176 A057384 A240254

Adjacent sequences:  A230375 A230376 A230377 * A230379 A230380 A230381

KEYWORD

nonn

AUTHOR

Colin Barker, Oct 17 2013

STATUS

approved

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Last modified October 22 17:29 EDT 2019. Contains 328319 sequences. (Running on oeis4.)