OFFSET
0,1
EXAMPLE
0.3664040247830575996736233241839478589703570922299...
MATHEMATICA
s = Sum[ (-1)^k (k + 1)/(k^2 + 1), {k, 0, Infinity}]
d = Chop[N[s, 100]]
First[RealDigits[d]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, May 12 2024
STATUS
approved