OFFSET
1,1
COMMENTS
Integers n such that the elliptic curve y^2 = x^3 + (n^2+1)*x^2 + n^2*x has a positive rank.
LINKS
Allan MacLeod, Solutions to Leech's problem
EXAMPLE
PROG
(PARI) { isA117319(n) = ellanalyticrank(ellinit([0, n^2+1, 0, n^2, 0]))[1]; } /* Max Alekseyev, Sep 29 2015 */
CROSSREFS
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Mar 07 2006
STATUS
approved