login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A309030 Numbers k for which rank of the elliptic curve y^2=x^3+k*x is 3. 4
323, 328, 399, 445, 579, 723, 904, 943, 1023, 1139, 1288, 1314, 1443, 1508, 1679, 1743, 1763, 1768, 1953, 2005, 2035, 2159, 2275, 2328, 2419, 2451, 2504, 2533, 2725, 2739, 2790, 2793, 2824, 2915, 2980, 3029, 3038, 3043, 3108, 3196, 3199, 3245, 3341, 3363, 3443, 3459, 3465 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

PROG

(PARI) for(k=1, 3e3, if(ellanalyticrank(ellinit([0, 0, 0, k, 0]))[1]==3, print1(k", ")))

(MAGMA) for k in[1..4000] do if Rank(EllipticCurve([0, 0, 0, k, 0])) eq 3 then print k; end if; end for; // Vaclav Kotesovec, Jul 08 2019

CROSSREFS

Cf. A002158 (rank 0), A002159 (rank 1), A076329 (rank 2), this sequence (rank 3), A309031 (rank 4).

Cf. A309033.

Sequence in context: A266885 A253368 A033524 * A082947 A082948 A182554

Adjacent sequences:  A309027 A309028 A309029 * A309031 A309032 A309033

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Jul 08 2019

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 18 23:05 EDT 2019. Contains 328211 sequences. (Running on oeis4.)