Denominator of Sum_{k=1..n} H(k)/k^2, where H(k) is the k-th harmonic number.

A195506

Denominator of Sum_{k=1..n} H(k)/k^2, where H(k) is the k-th harmonic number.

Terms

    a(0) =1a(1) =8a(2) =216a(3) =1728a(4) =216000a(5) =216000a(6) =74088000a(7) =592704000a(8) =16003008000a(9) =16003008000

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