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 A096437 #13 Feb 08 2017 02:08:48 %S A096437 1,5,7,4,9,7,5,6,5,1,2,9,0,7,4,5,6,3,4,6,8,2,6,8,1,9,9,7,6,0,6,9,9,2, %T A096437 7,6,5,2,6,0,8,7,2,5,7,5,2,5,9,2,2,7,9,5,4,2,7,3,3,6,3,5,6,1,1,9,5,1, %U A096437 3,1,4,5,6,9,5,8,0,2,0,1,7,7,5,3,7,0,3,6,6,2,2,6,4,8,2,9,6,7,1,7,9,3,3,7,1 %N A096437 Decimal expansion of (Pi^2-e^2)^(1/2). %H A096437 G. C. Greubel, <a href="/A096437/b096437.txt">Table of n, a(n) for n = 1..5000</a> %e A096437 1.57497565129074563468268199760699 %t A096437 RealDigits[Sqrt[Pi^2-E^2],10,120][[1]] (* _Harvey P. Dale_, Feb 20 2013 *) %o A096437 (PARI) sqrt(Pi^2 - exp(2)) \\ _G. C. Greubel_, Feb 07 2017 %Y A096437 Cf. A002388, A072334, A096255. %K A096437 cons,nonn %O A096437 1,2 %A A096437 _Mohammad K. Azarian_, Aug 10 2004