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A230376 The left Aurifeuillian factor of n^n - 1 for n congruent to 1 mod 4 and squarefree. 2
11, 1803647, 2699538733, 30778903, 112663560435723374699, 554945667652531, 6243610407478181159725577611, 67643278270835231300426724641533, 253382315888712050791030544452181354268272663, 14710826638296122001733445931451 (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

1803647 is in the sequence because it is an Aurifeuillian factor of 13^13-1.

CROSSREFS

Cf. A005117, A220983, A220984, A230375, A230377-A230379.

Sequence in context: A156670 A116061 A013858 * A083443 A174089 A162861

Adjacent sequences:  A230373 A230374 A230375 * A230377 A230378 A230379

KEYWORD

nonn

AUTHOR

Colin Barker, Oct 17 2013

STATUS

approved

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Last modified February 19 09:57 EST 2020. Contains 332041 sequences. (Running on oeis4.)