%I
%S 1,0,9,9,6,4,2,7,0,8,4,5,5,9,8,0,6,6,4,8,3,7,6,2,1,7,3,5,2,4,3,4,6,5,
%T 0,6,4,1,8,3,3,3,5,9,9,9,5,6,3,2,3,7,8,9,4,5,8,0,8,2,5,8,7,5,5,7,6,3,
%U 6,7,7,2,4,3,3,4,2,4,6,4,6,7,6,8,6,9
%N Decimal expansion of lowest Dirichlet eigenvalue of Laplacian within the unitedged regular pentagon.
%C This is the lowest Dirichlet eigenvalue of the Helmholtz equation within the unitedged regular pentagon. It has been calculated (RSJ, Sep 2015) to just over 1500 decimal digits.
%H Robert Stephen Jones, <a href="/A262823/b262823.txt">Table of n, a(n) for n = 2..1504</a>
%H Robert S. Jones, <a href="http://arxiv.org/abs/1602.08636">Computing ultraprecise eigenvalues of the Laplacian within polygons</a>, arXiv preprint arXiv:1602.08636, 2016
%H Colleen Lanz, <a href="http://scholar.lib.vt.edu/theses/available/etd07082010083729/unrestricted/Lanz_CB_T_2010.pdf">The use of SchwarzChristoffel transformations in determining acoustic resonances</a>, Master's Thesis, Virgina Polytechnic Institute and State University, 2010. (See first entry in Table 8.2)
%e 10.996427084559806648376217352434650641833359995632378945808...
%K nonn,cons
%O 2,3
%A _Robert Stephen Jones_, Oct 03 2015
