a(n) = numerator of b(n), where b(1)=1, b(n) = Sum_{1<=k<n, gcd(k,n)=1} 1/b(k).
A127941
a(n) = numerator of b(n), where b(1)=1, b(n) = Sum_{1<=k<n, gcd(k,n)=1} 1/b(k).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =19a(5) =25a(6) =12091a(7) =942579a(8) =802405765442
External references
- oeis: A127941