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%I #15 Mar 26 2013 03:56:51
%S 4,1,3,2,9,2,1,1,6,1,0,1,5,9,4,3,3,6,6,2,6,6,2,8,3,9,4,2,7,6,6,9,7,5,
%T 6,4,9,8,5,5,9,0,6,8,7,0,8,3,5,4,5,0,8,2,8,7,1,9,7,6,6,4,2,4,7,7,2,3,
%U 8,9,0,6,3,0,3,4,8,5,5,4,3,3,5,6,4,2,8
%N Decimal expansion of the real part of Pi^i, where i=sqrt(-1).
%H Vincenzo Librandi, <a href="/A222130/b222130.txt">Table of n, a(n) for n = 0..5000</a>
%F Equals cos(log(Pi)) = (Pi^i+1/Pi^i)/2.
%e 0.41329211610159433662662839427669756498559068708354508287197664247...
%t RealDigits[Re[Pi^I], 10, 90][[1]] (* or *) RealDigits[Cos[Log[Pi]], 10, 90][[1]]
%o (Maxima) fpprec:90; ev(bfloat(realpart(%pi^%i)));
%Y Cf. A053510, A049470 (real part of e^i), A222131 (imaginary part of Pi^i).
%K nonn,cons
%O 0,1
%A _Bruno Berselli_, Feb 08 2013
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