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1,4

Table of n, a(n) for n=1..16.

Sequence in context: A142659 A140041 A264821 * A043375 A038479 A142334

Adjacent sequences: A013304 A013305 A013306 * A013308 A013309 A013310

sign,frac

Patrick Demichel (patrick.demichel(AT)hp.com)

Values replaced by numerators. - R. J. Mathar, Dec 22 2011

approved