A071760 Denominators of record absolute values of partial sums of Sum (mu(n)/n).

2, 6, 30, 105, 2310, 58644190679703485491635, 5364750833138837555449767529261714317873456270532298668855

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