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 A132715 #29 Jan 01 2025 14:42:24
%S A132715 7,9,5,7,7,4,7,1,5,4,5,9,4,7,6,6,7,8,8,4,4,4,1,8,8,1,6,8,6,2,5,7,1,8,
%T A132715 1,0,1,7,2,2,9,8,2,2,8,7,0,2,2,8,2,2,4,3,7,3,8,3,3,6,7,2,0,2,9,4,4,8,
%U A132715 3,9,8,8,1,7,1,1,3,2,6,7,5,4,5,0,5,6,9,0,1,3,8,3,1,2,6,5,4,2,9,7,8,0,3,6,4
%N A132715 Decimal expansion of 25/Pi.
%C A132715 Starting with 0, 0, 7, 9, 5, ... this is also the decimal expansion of 1/(4*Pi). Example: 0.079577471545947667884441881686257181... - _Omar E. Pol_, Jan 18 2013
%H A132715 Srinivasa Ramanujan, <a href="https://www.imsc.res.in/~rao/ramanujan/CamUnivCpapers/question/q463.htm">Question 463</a>, Journal of the Indian Mathematical Society, Vol. 5 (1913), p. 120.
%H A132715 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%F A132715 1/(4*Pi) = Integral_{x>=0} cos(Pi*x/2)/(exp(2*Pi*sqrt(x))-1) dx (Ramanujan, 1913). - _Amiram Eldar_, Jan 01 2025
%e A132715 7.9577471545947667884441881686257181...
%t A132715 RealDigits[25/Pi,10,120][[1]] (* _Harvey P. Dale_, Nov 24 2012 *)
%o A132715 (PARI) 25/Pi \\ _Charles R Greathouse IV_, Oct 01 2022
%o A132715 (Magma) R:= RealField(100); 25/Pi(R); // _Vincenzo Librandi_, Jan 01 2025
%Y A132715 Cf. A049541, A060294, A089491, A088538, A086201, A132696 to A132699, A132701, A132702.
%K A132715 cons,easy,nonn
%O A132715 1,1
%A A132715 _Omar E. Pol_, Aug 31 2007, Dec 30 2008
%E A132715 More digits from _R. J. Mathar_, Aug 17 2009