

A071758


Successive minima of partial sum of harmonic series Sum (mu(n)/n) are approximately 1/a(n).


0



2, 6, 30, 105, 2310, 6860, 6922, 6955, 7021, 192857, 201094, 220036, 679269, 736738, 762102, 2538828, 2621491, 3325700, 6146329, 9601104, 9659740, 10027087, 10355141, 220990748
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


LINKS



EXAMPLE

a(3) = 30 because the third successive minimum is (1  1/2  1/3  1/5) = 1/(30).


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, floor( 1/t)), )); v


CROSSREFS



KEYWORD

sign


AUTHOR



EXTENSIONS



STATUS

approved



