1,12

Largest k such that (x+1)/sum(i=0,x,1/phi(n+i)) is an integer for 0<=x<=k. It seems that a(n)<=5.

Table of n, a(n) for n=1..105.

Sequence in context: A063890 A156439 A087734 * A123343 A054439 A318656

Adjacent sequences: A073641 A073642 A073643 * A073645 A073646 A073647

easy,nonn

Benoit Cloitre, Sep 01 2002

approved