1,1

a(n) non-occurring in A001600(m) = A001599(m)*tau(A001599(m))/sigma(A001599(m)) = A001599(m)*A000005(A001599(m))/A000203(A001599(m)).

Robert G. Wilson v, Table of n, a(n) for n = 1..412

Takeshi Goto, On Ore's harmonic numbers, slides, Tokyo University of Science, Japan.

Cf. A001600, A001599, A000005, A000203.

Sequence in context: A335528 A163838 A228091 * A137257 A144976 A119622

Adjacent sequences: A157846 A157847 A157848 * A157850 A157851 A157852

nonn

Jaroslav Krizek, Mar 07 2009

More terms from Robert G. Wilson v, Aug 18 2013

approved