a(0)=1. a(n) = the numerator of the sum of the reciprocals of the earlier terms of the sequence which are coprime to n.

A127010

a(0)=1. a(n) = the numerator of the sum of the reciprocals of the earlier terms of the sequence which are coprime to n.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =11a(5) =57a(6) =126a(7) =17609a(8) =127439468

External references