OFFSET
1,1
COMMENTS
Compare the scatter plot to that of A061020.
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..12427
Antti Karttunen, Data supplement: n, a(n) computed for n = 1..65537
MATHEMATICA
With[{nn = 85}, MapIndexed[First[#2] + #1 &, Drop[CoefficientList[Series[Sum[LiouvilleLambda[k] k x^k/(1 - x^k), {k, 1, #}], {x, 0, #}], x], 1] &[nn]]] (* Michael De Vlieger, May 24 2021, after Jean-François Alcover at A061020 *)
PROG
CROSSREFS
KEYWORD
nonn,look
AUTHOR
Antti Karttunen, May 23 2021
STATUS
approved