A087494 - OEIS

A087494

Decimal expansion of Khinchin mean K_{-4}.

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

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OFFSET

1,2

COMMENTS

Khinchin's constant is K_0.

LINKS

Table of n, a(n) for n=1..100.

Eric Weisstein's World of Mathematics, Khinchin's Constant

EXAMPLE

1.23696180...

MATHEMATICA

m = 4; digits = 100; exactEnd = 1000; f[n_] = -(Log[1 - (1 + n)^(-2)]/(n^m*Log[2])); s[n_] = Series[f[n], {n, Infinity, digits}] // Normal // N[#, digits]&; exactSum = Sum[f[n], {n, 1, exactEnd}] // N[#, digits]&; extraSum = Sum[s[n], {n, exactEnd + 1, Infinity}] // N[#, digits]&; (exactSum + extraSum)^(-1/m) // RealDigits[#, 10, digits]& // First (* Jean-François Alcover, Feb 14 2013 *)

CROSSREFS

Cf. A002210, A087491, A087492, A087493, A087494, A087495, A087496, A087497, A087498, A087499, A087500.

Sequence in context: A361133 A361534 A359857 * A328843 A358850 A021426

Adjacent sequences: A087491 A087492 A087493 * A087495 A087496 A087497

KEYWORD

nonn,cons

AUTHOR

Eric W. Weisstein, Sep 09 2003

EXTENSIONS

More terms from Jean-François Alcover, Feb 14 2013

STATUS

approved