A349649 Discriminants of real quadratic fields whose fundamental unit has norm 1.

12, 21, 24, 28, 33, 44, 56, 57, 60, 69, 76, 77, 88, 92, 93, 105, 120, 124, 129, 133, 136, 140, 141, 152, 156, 161, 165, 168, 172, 177, 184, 188, 201, 204, 205, 209, 213, 217, 220, 221, 236, 237, 248, 249, 253, 264, 268, 273, 280, 284, 285, 301, 305, 309, 312, 316

Offset

1,1

References

D. A. Buell, Binary Quadratic Forms, Springer-Verlag, NY, 1989, pp. 92-93.

Paulo Ribenboim, My Numbers, My Friends: Popular Lectures on Number Theory, Springer-Verlag, NY, 2000, p. 151.

Links

Table of n, a(n) for n=1..56.

Index entries for sequences related to quadratic fields

Prog

(PARI) isok(D) = isfundamental(D) && norm(quadunit(D))==1;

Crossrefs

Cf. A003658, A003653 (discriminants of real quadratic fields whose fundamental unit has norm -1).

Cf. A003656, A327297 (a subsequence).

Sequence in context: A116700 A132132 A248378 * A327297 A371464 A199981

Adjacent sequences: A349646 A349647 A349648 * A349650 A349651 A349652

Keyword

nonn

Author

Arkadiusz Wesolowski, Nov 23 2021

Status

approved