1,2

Denominators: A120832(n);

a(n)/A120832(n) = Sum(A068318(n)/A001358(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 + 5/6 + 6/9 + 7/10 + 9/14 = 269/70 = a(5)/A120832(5).

Cf. A120835, A120833.

Sequence in context: A033331 A085716 A127820 this_sequence A038319 A002547 A090840

Adjacent sequences: A120828 A120829 A120830 this_sequence A120832 A120833 A120834

nonn,frac

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