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A110620 Number of elliptic curves (up to isomorphism) of conductor n. 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 6, 8, 0, 4, 0, 3, 4, 6, 0, 0, 6, 0, 5, 4, 0, 0, 8, 0, 4, 4, 4, 3, 4, 4, 5, 4, 4, 0, 6, 1, 2, 8, 2, 0, 6, 4, 8, 2, 2, 1, 6, 4, 6, 7, 3, 0, 0, 1, 4, 6, 4, 2, 12, 1, 0, 2, 4, 0, 6, 2, 0, 12, 1, 6, 4, 1, 8, 0, 2, 1, 6, 2, 0, 0, 1, 3, 16, 4, 3, 0, 2, 0, 8, 0, 6, 11, 4, 1, 12, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,11

LINKS

Table of n, a(n) for n=1..103.

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

Cf. A005788, A060564.

Sequence in context: A275689 A285311 A285131 * A270392 A060284 A036275

Adjacent sequences:  A110617 A110618 A110619 * A110621 A110622 A110623

KEYWORD

nonn

AUTHOR

Steven Finch, Sep 14 2005

STATUS

approved

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Last modified September 23 21:30 EDT 2017. Contains 292392 sequences.