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Second column of A098505.
Table of n, a(n) for n=0..62.
a(n)=numerator((n+1)binomial(n, 2)/binomial(2n, n)); a(n)=numerator((n-1)n(n+1)/(2binomial(2n, n)).
Sequence in context: A245145 A092316 A142456 * A051593 A142712 A247577
Adjacent sequences: A098505 A098506 A098507 * A098509 A098510 A098511
Paul Barry, Sep 11 2004