This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A222129 #11 Mar 26 2013 03:54:22 %S A222129 9,7,5,3,6,7,9,7,2,0,8,3,6,3,1,3,8,5,1,5,7,4,8,2,8,7,4,1,0,8,4,9,4,7, %T A222129 8,8,4,7,4,0,9,6,5,1,2,3,6,3,7,7,4,9,7,2,9,8,7,0,8,8,9,9,1,1,6,1,9,2, %U A222129 6,0,4,5,6,8,3,3,7,4,3,2,2,1,8,0,1,6,9 %N A222129 Decimal expansion of the imaginary part of 1/i^Pi, where i=sqrt(-1). %C A222129 Also, decimal expansion of the imaginary part of -i^Pi. %H A222129 Vincenzo Librandi, <a href="/A222129/b222129.txt">Table of n, a(n) for n = 0..5000</a> %F A222129 Equals -sin(Pi^2/2). %e A222129 0.97536797208363138515748287410849478847409651236377497298708899116... %t A222129 RealDigits[Im[1/I^Pi], 10, 90][[1]] (* or *) RealDigits[-Sin[Pi^2/2], 10, 90][[1]] %o A222129 (Maxima) fpprec:90; ev(bfloat(imagpart(1/%i^%pi))); %Y A222129 Cf. A102753, A211884, A222128 (real part of 1/i^Pi). %K A222129 nonn,cons %O A222129 0,1 %A A222129 _Bruno Berselli_, Feb 08 2013