OFFSET
1,11
LINKS
J. E. Cremona, Elliptic Curve Data
EXAMPLE
a(11)=3 since there are three non-isomorphic elliptic curves of conductor eleven, represented by the minimal models y^2+y=x^3-x^2-10*x-20, y^2+y=x^3-x^2-7820*x-263580 and y^2+y=x^3-x^2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Steven Finch, Sep 14 2005
STATUS
approved