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 A215832 #17 Sep 22 2012 10:35:49
%S A215832 6,4,1,0,1,9,2,3,7,6,3,2,7,9,0,3,5,5,6,8,8,8,4,6,8,6,8,8,1,6,6,2,4,2,
%T A215832 4,1,9,6,8,9,4,4,5,6,3,2,5,5,8,1,4,2,0,6,7,6,6,3,0,5,2,8,9,8,7,2,2,4,
%U A215832 1,1,1,9,7,6,8,8,3,9,5,6,4,2,0,0,9,2,0,9,7,6,8,4,8,0,2,8,4,3,4,6,9,4,0,7,4,3,8,6,5,1,1,7,8,2,4,7,1,0,0,5,0,4,1,3,4
%N A215832 Decimal expansion of the maximum of the function f(x) = log(cos(sin(x)))/log(sin(cos(x))), x in (0,Pi/2).
%C A215832 The inverse of this maximum is equal to A215833. The argument z in (0,Pi/2) for which f(z) = max{f(x): x in (0,Pi/2)} is given in A168546. We note that f is increasing in the interval (0,z) and decreasing in the interval (z,Pi/2).
%D A215832 R. Witula, D. Jama, E. Hetmaniok, D. Slota, On some inequality of the trigonometric type, Zeszyty Naukowe Politechniki Slaskiej - Matematyka-Fizyka (Science Fascicle of Silesian Technical University - Math.-Phys.), 92 (2010), 83-92.
%e A215832 We have M := max{f(x): x in (0,Pi/2)} = 0.6410192376327.
%Y A215832 Cf. A215833, A168546, A215670, A215668, A216891.
%K A215832 nonn,cons
%O A215832 0,1
%A A215832 _Roman Witula_, Aug 24 2012