Denominator of the harmonic mean of the first n positive 10-gonal numbers.

A250551

Denominator of the harmonic mean of the first n positive 10-gonal numbers.

Terms

    a(0) =1a(1) =11a(2) =307a(3) =8117a(4) =139393a(5) =982381a(6) =4935773a(7) =287319059a(8) =1056494083a(9) =39179109811

External references