a(n) = (1/n) * Sum_{d|n} moebius(n/d) * Lucas(d)^7, where Lucas(n) = A000204(n).
A203858
a(n) = (1/n) * Sum_{d|n} moebius(n/d) * Lucas(d)^7, where Lucas(n) = A000204(n).
Terms
- a(0) =1a(1) =1093a(2) =5461a(3) =205339a(4) =3897434a(5) =102033577a(6) =2464268044a(7) =63327787115
External references
- oeis: A203858