1,2

Denominators: A120834(n);

a(n)/A120834(n) = Sum(A001358(n)/A068318(n):1<=k<=n).

n=5: 2*2/(2+2)+2*3/(2+3)+3*3/(3+3)+2*5/(2+5)+2*7/(2+7) =

4/4 + 6/5 + 9/6 + 10/7 + 14/9 = 4211/630 = a(5)/A120834(5).

Cf. A120836, A120831.

Sequence in context: A075024 A152094 A147556 this_sequence A034969 A052432 A104269

Adjacent sequences: A120830 A120831 A120832 this_sequence A120834 A120835 A120836

nonn,frac

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 24 2006