1,1

Positive integer N belongs to this sequence if and only if the elliptic curve y^2 = x^3 + (N^2+1/N^2)*x^2 + x has positive rank.

Table of n, a(n) for n=1..71.

Sequence in context: A258469 A173147 A293761 * A097480 A034068 A045550

Adjacent sequences: A253878 A253879 A253880 * A253882 A253883 A253884

nonn

Thomas Bokk, Jan 17 2015

approved