Hirschhorn, M. D. "An Amazing Identity of Ramanujan." Math. Mag.68, 199-201, 1995.Hirschhorn, M. D. "A
Proof in the Spirit of Zeilberger of an Amazing Identity of Ramanujan." Math.
Mag.69, 267-269, 1996.Sloane, N. J. A. Sequences
A051028, A051029,
and A051030 in "The On-Line Encyclopedia
of Integer Sequences."