A309061 Rank of elliptic curve y^2 = x^3 + n^2 * x.

0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 2, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 2, 2, 0, 1, 0, 0, 1, 1, 1, 2, 1, 1, 0, 0, 2, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 2

Offset: 1

Author

Seiichi Manyama, Jul 09 2019

Keywords

• nonn

Crossrefs

Cf. A060953, A309060, A319510.

Programs

PARI

{a(n) = ellanalyticrank(ellinit([0, 0, 0, n^2, 0]))[1]}

Formula

a(n) = A060953(n^2).