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 A071760 Denominators of record absolute values of partial sums of Sum (mu(n)/n). 1
 2, 6, 30, 105, 2310, 58644190679703485491635, 5364750833138837555449767529261714317873456270532298668855 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(1) = 2 because the first minimum of sum(mu(n)/n), n>1, is 1-1/2 = 1/(2). LINKS Table of n, a(n) for n=1..7. PROG (PARI) t = 0; t1 = 1; v = []; for( n = 1, 200, t = t + moebius( n) / n; if( ( t / t1)^2 < 1, t1 = t; v = concat( v, denominator( t)), )); v CROSSREFS Cf. A071759. Sequence in context: A034501 A203461 A071758 * A304579 A036752 A065563 Adjacent sequences: A071757 A071758 A071759 * A071761 A071762 A071763 KEYWORD nonn,frac AUTHOR Donald S. McDonald, May 18 2002 STATUS approved

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Last modified December 10 19:44 EST 2023. Contains 367717 sequences. (Running on oeis4.)