A230379 The right Aurifeuillian factor of k^k + 1 for k congruent to 0, 2 or 3 (mod 4) and squarefree.

5, 7, 97, 911, 27961, 407353, 19955461, 142111, 870542161121, 73194743542229, 2498077661567473, 255982845098719961, 1784464680181, 63472256064447557254913, 8751868368432861971645641, 9227671631659104191, 73515350937824503550370503117, 34089603477374212561

Offset

1,1

Comments

The values of k are given by A230375.

Links

Table of n, a(n) for n=1..18.

Richard P. Brent, On computing factors of cyclotomic polynomials

Example

407353 is in the sequence because it is an Aurifeuillian factor of 11^11+1.

Crossrefs

Sequence in context: A165784 A329006 A176619 * A292847 A088270 A259496

Adjacent sequences: A230376 A230377 A230378 * A230380 A230381 A230382

Keyword

nonn

Author

Colin Barker, Oct 17 2013

Status

approved