A169800 Decimal expansion of 2/log(1+sqrt(2)).

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

Offset

1,1

Comments

Critical temperature for two-dimensional Ising model.

Links

G. C. Greubel, Table of n, a(n) for n = 1..10000

M. Richey, The evolution of Markov chain Monte Carlo Methods, Amer. Math. Monthly, 117 (No. 5, 2010), 383-413.

Index entries for transcendental numbers

Example

2.2691853142130219681144908103065724757259815855040013500506...

Mathematica

RealDigits[2/Log[1 + Sqrt[2]], 10, 100][[1]] (* G. C. Greubel, Oct 02 2018 *)

Prog

(PARI) 2/log(1+sqrt(2)) \\ Charles R Greathouse IV, Mar 25 2014
(Magma) SetDefaultRealField(RealField(100)); 2/Log(1+Sqrt(2)); // G. C. Greubel, Oct 02 2018

Crossrefs

Cf. A091648 (log(1 + sqrt(2))).

Sequence in context: A346201 A131553 A277510 * A094485 A331988 A242978

Adjacent sequences: A169797 A169798 A169799 * A169801 A169802 A169803

Keyword

nonn,cons

Author

N. J. A. Sloane, May 18 2010

Status

approved