A394548 Decimal expansion of the negated value of Sum_{n>=1} cos(n)/n^(2/3).

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

Offset

0,3

Links

Table of n, a(n) for n=0..94.

Example

-0.10726962841569667...

Mathematica

Re[PolyLog[2/3, E^I]] ;
N[%, 100] ; (* R. J. Mathar, Mar 27 2026 *)

Crossrefs

Cf. A121225 (denom. n), A122143 (denom. n^2), A263192 (denom. n^(1/2)), A394547 (denom. n^(1/3)).

Sequence in context: A199433 A095398 A073330 * A208852 A248284 A350620

Adjacent sequences: A394545 A394546 A394547 * A394549 A394550 A394551

Keyword

nonn,cons

Author

R. J. Mathar, Mar 24 2026

Status

approved