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%I #21 Feb 08 2022 02:38:53
%S 1,9,8,2,8,8,1,5,2,8,6,2,2,0,6,2,3,2,2,6,7,8,8,8,9,5,6,6,0,4,8,6,4,6,
%T 7,0,8,4,2,0,8,4,8,9,2,5,0,1,2,9,7,1,6,5,2,7,4,2,6,1,9,3,1,8,0,2,6,4,
%U 2,4,6,0,4,1,7,1,5,0,7,9,1,4,1,9,6,1,8,1,4,5,3,1,6,6,5,3,4,4,6,2,6,8,4,8
%N Decimal expansion of e^(-(1+sqrt(5))/2).
%C By the Lindemann-Weierstrass theorem, this constant is transcendental. - _Charles R Greathouse IV_, May 13 2019
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%F Equals exp(-A001622).
%F Equals 1/A139341. - _Amiram Eldar_, Feb 08 2022
%e 0.19828815286220623226788895660486467084208489250129...
%p evalf(exp(1)^(-(1+sqrt(5))/2),100); # _Wesley Ivan Hurt_, Feb 09 2017
%t RealDigits[E^-GoldenRatio,10,120][[1]] (* _Harvey P. Dale_, Dec 30 2020 *)
%o (PARI) exp(-(sqrt(5)+1)/2) \\ _Charles R Greathouse IV_, May 13 2019
%Y Cf. A001622, A094214, A104457, A098317, A002390, A139339, A139340, A139341.
%K nonn,cons
%O 0,2
%A _Mohammad K. Azarian_, Apr 14 2008
%E Leading zero removed by _R. J. Mathar_, Feb 05 2009
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