1,1

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

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

Cf. A193524, A193528, A193531.

Sequence in context: A032775 A057905 A039253 * A039159 A003251 A288315

Adjacent sequences: A193530 A193531 A193532 * A193534 A193535 A193536

nonn

Artur Jasinski, Jul 29 2011

Definition modified by Harvey P. Dale, Feb 04 2017

approved