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%I
%S 1,7,3,9,8,2,3,9,2,4,5,1,2,6,6,9,3,8,4,2,6,7,9,4,6,5,5,7,8,8,7,3,8,2,
%T 7,2,0,8,2,1,5,3,1,5,8,3,4,7,9,3,5,9,8,1,3,7,8,7,9,0,0,8,8,1,0,5,5,2,
%U 5,5,5,5,6,7,3,8,2,4,4,8,3,1,3,2,6,4,3,9,5,1,5,5,7,0,7,5,0,0,1,2,8,8
%N Decimal expansion of 13/720 - Pi^2/15015.
%C Average volume of a tetrahedron picked at random in a tetrahedron with unit volume.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TetrahedronTetrahedronPicking.html">Tetrahedron Tetrahedron Picking</a>
%e 0.0173982392...
%K nonn,cons
%O 0,2
%A _Eric W. Weisstein_, Mar 30, 2004
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