1,2

J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 181, p. 56, Ellipses, Paris 2008.

L. J. Mordell, Diophantine Equations, Academic Press, NY, 1969, p. 205.

Eric Weisstein's World of Mathematics, Ramanujan's Square Equation

Cf. A060728.

Sequence in context: A083841 A154941 A062601 this_sequence A079037 A101315 A066541

Adjacent sequences: A038195 A038196 A038197 this_sequence A038199 A038200 A038201

nonn,fini,full

N. J. A. Sloane (njas(AT)research.att.com).