OFFSET
0,3
LINKS
N. Luzin, Function: Part II, Amer. Math. Monthly, 105 (1998), 263-270.
MATHEMATICA
nmax = 100; CoefficientList[Series[(1+x)/(1-x) - 2*Sum[x^(m^2)/(1 - x^((m+1)^2)), {m, 1, Floor[Sqrt[nmax]] + 1}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Oct 04 2017 *)
PROG
(PARI) lista(nn) = Vec((1+z)/(1-z) - 2*sum(m=1, nn, z^(m^2)/(1-z^((m+1)^2) + O(z^nn)))); \\ Michel Marcus, Oct 02 2017
CROSSREFS
KEYWORD
sign
AUTHOR
STATUS
approved