|
| |
|
|
A034170
|
|
Disjoint discriminants (one form per genus) of type 1.
|
|
1
|
|
|
|
5, 13, 21, 33, 37, 57, 85, 93, 105, 133, 165, 177, 253, 273, 345, 357, 385, 1365
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
REFERENCES
|
L. E. Dickson, Introduction to the theory of numbers, Dover, NY, 1929.
J. M. Borwein and P. B. Borwein, Pi and the AGM, page 293.
|
|
|
LINKS
|
|
|
|
FORMULA
|
|
|
|
PROG
|
(PARI) ok(n)={n<>1 && n%4==1 && issquarefree(n) && !select(t->t<>2, quadclassunit(-4*n).cyc)} \\ Andrew Howroyd, Jun 09 2018
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn,fini,full
|
|
|
AUTHOR
|
Jonathan Borwein (jborwein(AT)cecm.sfu.ca), Stephen Choi (choi(AT)cecm.sfu.ca)
|
|
|
STATUS
|
approved
|
| |
|
|
