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A179106 Integers n for which quintic x^5-x+/-n is the product of an irreducible quadratic and an irreducible cubic polynomials. 1
15, 22440, 2759640 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Rabinowitz in 1968 showed that this list is complete.

REFERENCES

Rabinowitz S., 1968. Math. Mag. 61 p.191-193.

LINKS

Table of n, a(n) for n=1..3.

MATHEMATICA

aa = {}; Do[Do[If[(-a^3 b + 2 a b^2 != 0) && ((-a^4 + 3 a^2 b - b^2) == -1), AppendTo[aa, Abs[ -a^3 b + 2 a b^2]]], {a, 1, 12}], {b, 1, 377}]; aa (*Artur Jasinski*)

CROSSREFS

Cf. A178868, A193524.

Sequence in context: A174304 A208461 A068939 * A157643 A340291 A104682

Adjacent sequences:  A179103 A179104 A179105 * A179107 A179108 A179109

KEYWORD

nonn,bref,fini,full

AUTHOR

Artur Jasinski, Jun 29 2010

EXTENSIONS

Partially edited by N. J. A. Sloane, Jul 06 2010

STATUS

approved

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Last modified April 14 09:23 EDT 2021. Contains 342948 sequences. (Running on oeis4.)