A371945 Decimal expansion of Sum_{k>=0} (-1)^k / (k^3 + 1).
5, 8, 5, 6, 9, 8, 8, 6, 1, 9, 4, 9, 7, 9, 1, 8, 8, 6, 4, 5, 3, 3, 2, 7, 0, 4, 6, 9, 5, 9, 1, 8, 6, 1, 5, 3, 9, 7, 5, 3, 6, 3, 0, 2, 1, 2, 8, 6, 9, 4, 9, 2, 8, 3, 7, 4, 7, 5, 2, 7, 3, 3, 2, 7, 7, 8, 0, 9, 0, 1, 4, 0, 7, 0, 0, 9, 4, 3, 8, 5, 6, 8, 2, 9, 9, 7
Offset: 0
Examples
0.58569886194979188645332704695918615397536302...
Crossrefs
Cf. A339606.
Programs
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Mathematica
s = Chop[N[Sum[(-1)^k/(k^3 + 1), {k, 0, Infinity}], 120]] First[RealDigits[s]]