login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Decimal expansion of Sum_{k>=1} c(2k), where c = convergents to (x = sqrt(6)).
4

%I #6 Dec 18 2015 11:35:45

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

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

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

%N Decimal expansion of Sum_{k>=1} c(2k), where c = convergents to (x = sqrt(6)).

%e sum = 0.0510257748284475366870974186164101059561600202984037166...

%t x = Sqrt[6]; z = 600; c = Convergents[x, z];

%t s1 = Sum[x - c[[2 k - 1]], {k, 1, z/2}]; N[s1, 200]

%t s2 = Sum[c[[2 k]] - x, {k, 1, z/2}]; N[s2, 200]

%t N[s1 + s2, 200]

%t RealDigits[s1, 10, 120][[1]] (* A265300 *)

%t RealDigits[s2, 10, 120][[1]] (* A265301 *)

%t RealDigits[s1 + s2, 10, 120][[1]](* A265302 *)

%Y Cf. A010464, A265300, A265302, A265288 (guide).

%K nonn,cons

%O 0,1

%A _Clark Kimberling_, Dec 13 2015