1,1

Sum{k=1 to n} a(k) = A160822(n).

H. v. Eitzen, Table of n, a(n) for n=1,...,10000

Cf. A001221, A160819, A160822.

Sequence in context: A334216 A100549 A085962 * A300225 A060244 A072814

Adjacent sequences: A160818 A160819 A160820 * A160822 A160823 A160824

nonn

Leroy Quet, May 27 2009

Extended by Ray Chandler, Jun 15 2009

approved