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 A179021 #6 Apr 08 2018 13:51:42 %S A179021 3,7,9,9,6,7,1,0,3,8,3,9,2,6,6,5,9,0,7,9,1,7,1,8,6,0,5,1,5,0,9,9,1,1, %T A179021 2,5,9,3,9,5,5,8,1,6,1,5,4,2,5,5,5,9,0,7,9,1,9,9,1,4,0,5,9,6,3,0,0,9, %U A179021 1,0,9,7,0,5,1,3,8,5,9,2,2,7,5,7,8,0,1,7,9,0,4,1,8,8,0,2,7,4,3,1,0,7,7,5,0 %N A179021 Decimal expansion of sqrt(231)/4. %C A179021 Area of the obtuse scalene triangle with sides of lengths 2, 4 and 5. Second smallest area of triangle with distinct integer sides. %e A179021 3.79967103839266590791718605150991125939558161542555907919914059630091... %t A179021 a=2;b=4;c=5;s=(a+b+c)/2;area=Sqrt[s*(s-a)*(s-b)*(s-c)];RealDigits[N[area,200]] %t A179021 RealDigits[Sqrt[231]/4,10,120][[1]] (* _Harvey P. Dale_, Apr 08 2018 *) %Y A179021 Cf. A140239. %K A179021 nonn,cons %O A179021 1,1 %A A179021 _Vladimir Joseph Stephan Orlovsky_, Jun 25 2010