A394548 - OEIS

%I #8 Mar 27 2026 05:17:21

%S 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,

%T 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,

%U 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

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

%e -0.10726962841569667...

%t Re[PolyLog[2/3,E^I]] ;

%t N[%,100] ; (* _R. J. Mathar_, Mar 27 2026 *)

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

%K nonn,cons

%O 0,3

%A _R. J. Mathar_, Mar 24 2026