1,1

Table of n, a(n) for n=1..60.

L. J. Corwin, Irreducible polynomials over the integers which factor mod p for every p, Unpublished Bell Labs Memo, Sep 07 1967 [Annotated scanned copy]

Twice A061345.

Sequence in context: A103747 A290490 A182991 * A250198 A260084 A194282

Adjacent sequences: A278565 A278566 A278567 * A278569 A278570 A278571

nonn

N. J. A. Sloane, Nov 26 2016

approved