A309144 Rank of elliptic curve y^2 = x^3 + (n^2 + 6*n -3)*x^2 - 16*n*x.

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

Offset: 1

Author

Seiichi Manyama, Jul 14 2019

Keywords

• nonn

Links

• Seiichi Manyama, Table of n, a(n) for n = 1..1000
• Allan J. MacLeod, Knight's Problem

Crossrefs

Cf. A102535.

Programs

PARI

{a(n) = ellanalyticrank(ellinit([0, n^2+6*n-3, 0, -16*n, 0]))[1]}