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

Author

Colin Barker, Oct 17 2013

Keywords

• nonn

Comments

The values of k are given by A230375.

Examples

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

Links

• Richard P. Brent, On computing factors of cyclotomic polynomials