The solutions here are listed in the order given by Mordell. See A029728 and A029727 for a better version (with comments and references).
L. J. Mordell, Diophantine Equations, Ac. Press, p. 246.
Table of n, a(n) for n=1..8.
Cf. A124439 (x values). See A029728 for further comments and references.
Sequence in context: A200636 A229938 A226654 * A277261 A140391 A316965
Adjacent sequences: A124448 A124449 A124450 * A124452 A124453 A124454
N. J. A. Sloane.