OFFSET
1,3
COMMENTS
FORMULA
a(2n-1) = numerator(s(n)), a(2n)=denominator(s(n)), where s(n)=sum(1/A119751(k),k=1..n).
EXAMPLE
a(5)=13, a(6)=9 since s(3)=1+1/3+1/9=13/9.
CROSSREFS
KEYWORD
nonn
AUTHOR
Walter Kehowski, Jun 23 2006
EXTENSIONS
This is not really a sequence. The standard OEIS convention would be to split this into two cross-referenced sequences with keyword "frac". - N. J. A. Sloane, Jul 22 2006
STATUS
approved