1,1

For such k, quintic trinomial x^5-k*x+m is not reducible into cubic and quadratic factors for any integer m.

Table of n, a(n) for n=1..66.

Cf. A193524.

Sequence in context: A332021 A047560 A032899 * A232681 A296350 A076436

Adjacent sequences: A193525 A193526 A193527 * A193529 A193530 A193531

nonn

Artur Jasinski, Jul 29 2011

Definition corrected by Harvey P. Dale, Mar 25 2012

approved