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%I #13 Nov 23 2020 08:11:15
%S 1,0,6,0,1,7,0,2,9,5,3,7,4,2,3,6,0,5,1,0,3,3,0,4,7,9,1,8,7,2,1,5,4,1,
%T 3,5,9,4,1,1,2,7,6,1,0,0,7,7,9,7,6,9,7,9,8,1,6,2,9,6,0,9,1,5,1,3,6,2,
%U 0,9,7,6,3,9,2,5,4,6,3,4,4,8,7,3,7,7,2,2,9,0,5,8,2,3,7,0,5,9,9,1,9,7,9,3,2
%N Decimal expansion of arc length of the cornoid curve.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Cornoid.html">Cornoid</a>
%F 4*(EllipticE[ -2] - 3*EllipticK[ -2] + 3*EllipticPi[1/4, -2])
%e 10.601702953742360510...
%p Re(evalf(4*(EllipticE(I*sqrt(2)) - 3*EllipticK(I*sqrt(2)) + 3*EllipticPi(1/4, I*sqrt(2))), 120)); # _Vaclav Kotesovec_, Apr 22 2015
%t RealDigits[N[4*(EllipticE[-2]-3*EllipticK[-2]+3*EllipticPi[1/4,-2]),105]][[1]] (* _Vaclav Kotesovec_, Apr 22 2015 *)
%t RealDigits[N[(4 (9 EllipticE[2/3] - EllipticK[2/3] + EllipticPi[3/4, 2/3]))/(3 Sqrt[3]), 105]][[1]] (* _Jan Mangaldan_, Nov 22 2020 *)
%K nonn,cons
%O 2,3
%A _Eric W. Weisstein_, Jun 02 2008