Denominator of Sum_{k=1..n} 1/L(k) where L(n) is the n-th Lucas number (A000204).

A225905

Denominator of Sum_{k=1..n} 1/L(k) where L(n) is the n-th Lucas number (A000204).

Terms

    a(0) =1a(1) =3a(2) =12a(3) =84a(4) =924a(5) =2772a(6) =80388a(7) =3778236a(8) =35893242a(9) =1471622922a(10) =292852961478

External references