a(n) = denominator of Sum_{k=1..n} 1/k^(n+1-k).
A130426
a(n) = denominator of Sum_{k=1..n} 1/k^(n+1-k).
Terms
- a(0) =1a(1) =2a(2) =12a(3) =72a(4) =1080a(5) =129600a(6) =54432000a(7) =22861440000
External references
- oeis: A130426
A130426
a(n) = denominator of Sum_{k=1..n} 1/k^(n+1-k).