OFFSET
1,2
COMMENTS
Conjecture: with the exception of the second term, 2 <= A165659(n)/a(n) < 3.
PROG
(PARI) a1(n)=sum(i=1, n, prime(i)); b1(n)=sum(i=1, n, prime(n+1)%prime(i)); a(n)=if(n<0, 0, denominator(a1(n)/b1(n))); for(n=1, 50, print1(a(n) ", "))
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Creighton Dement, Sep 24 2009
EXTENSIONS
Terms corrected by Creighton Dement, Oct 03 2009
Removed a conjecture - R. J. Mathar, Oct 09 2009
Typo in definition corrected by Creighton Dement, Oct 09 2009
STATUS
approved