OFFSET
2,3
COMMENTS
This is the lowest Dirichlet eigenvalue of the Helmholtz equation within the unit-edged regular pentagon. It has been calculated (RSJ, Sep 2015) to just over 1500 decimal digits.
LINKS
Robert Stephen Jones, Table of n, a(n) for n = 2..1504
Robert S. Jones, Computing ultra-precise eigenvalues of the Laplacian within polygons, arXiv preprint arXiv:1602.08636, 2016
Colleen Lanz, The use of Schwarz-Christoffel transformations in determining acoustic resonances, Master's Thesis, Virgina Polytechnic Institute and State University, 2010. (See first entry in Table 8.2)
EXAMPLE
10.996427084559806648376217352434650641833359995632378945808...
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Robert Stephen Jones, Oct 03 2015
STATUS
approved