OFFSET
1,2
COMMENTS
Selmer proved that for all n the Galois group of the polynomial x^n - x - 1 over the rationals is the symmetric group S_n. [Comment corrected by Artur Jasinski, Feb 06 2007]
LINKS
Mohammad K. Azarian, On the Hyperfactorial Function, Hypertriangular Function, and the Discriminants of Certain Polynomials, International Journal of Pure and Applied Mathematics, Vol. 36, No. 2, 2007, pp. 251-257. Mathematical Reviews, MR2312537. Zentralblatt MATH, Zbl 1133.11012.
H. Osada, The Galois groups of the polynomials X^n + a X^l + b, Journal of Number Theory, Feb. 1987, vol. 25, (no.2):230-8.
Ernst S. Selmer, On the irreducibility of certain trinomials, Math. Scand., 4 (1956) 287-302.
FORMULA
PROG
(PARI) a(n)=poldisc(x^n-x-1)
CROSSREFS
KEYWORD
sign
AUTHOR
Yuval Dekel (dekelyuval(AT)hotmail.com), Aug 05 2003
EXTENSIONS
More terms from Benoit Cloitre, Aug 06 2003
STATUS
approved