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Table of n, a(n) for n=3..60.
a(n)=n^2-n-1 for n=3, 4, 6, 12, 18, 30, 42, 60, 72...
Sequence in context: A125685 A098147 A100298 * A117069 A145355 A110353
Adjacent sequences: A066458 A066459 A066460 * A066462 A066463 A066464
Benoit Cloitre, Jan 02 2002