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A174651 Numbers n such that Sum_{k=1..n} k*Mobius(k) = n. 1
1, 88, 125, 5246 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

No more terms < 10^7.

LINKS

Table of n, a(n) for n=1..4.

MATHEMATICA

muSums = Accumulate@Table[MoebiusMu[k] k, {k, 10^7}]; A174651 = {}; For[i = 1, i <= Length@muSums, i++, If[muSums[[i]] == i, AppendTo[A174651, i]]]; A174651

CROSSREFS

Cf. A008683, A002321, A055615, A068340.

Sequence in context: A161194 A196581 A179245 * A225136 A039445 A247528

Adjacent sequences:  A174648 A174649 A174650 * A174652 A174653 A174654

KEYWORD

nonn

AUTHOR

Carl Najafi, Dec 22 2012

STATUS

approved

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Last modified March 28 15:52 EDT 2017. Contains 284243 sequences.