A372364 Decimal expansion of Sum_{k>=0} (-1)^k * k / (k^2+2).

1, 5, 0, 9, 0, 7, 5, 5, 7, 4, 9, 3, 7, 7, 7, 5, 7, 0, 9, 6, 1, 6, 6, 4, 5, 8, 7, 0, 9, 1, 6, 4, 1, 2, 3, 3, 5, 9, 7, 7, 7, 6, 3, 7, 7, 1, 8, 0, 0, 4, 2, 4, 4, 1, 8, 9, 3, 6, 9, 2, 4, 1, 3, 5, 2, 5, 5, 1, 4, 9, 5, 1, 8, 6, 0, 4, 3, 8, 7, 4, 1, 4, 4, 4, 0, 2

Offset

0,2

Links

Table of n, a(n) for n=0..85.

Example

-0.1509075574937775709616645870916412335977763771...

Mathematica

s = Sum[(-1)^k k/(k^2 + 2), {k, 0, Infinity}]
d = Chop[N[s, 100]]
First[RealDigits[d]]

Crossrefs

Cf. A372363.

Sequence in context: A141431 A166011 A344144 * A266222 A266439 A132706

Adjacent sequences: A372361 A372362 A372363 * A372365 A372366 A372367

Keyword

nonn,cons

Author

Clark Kimberling, May 01 2024

Status

approved