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 A345411 #5 Jun 18 2021 21:58:50 %S A345411 5,6,8,2,5,2,6,6,0,5,4,9,7,4,3,1,3,1,1,0,4,6,5,9,3,3,8,0,2,1,7,0,4,2, %T A345411 5,8,7,1,5,1,2,3,0,9,4,4,4,1,1,9,4,6,7,5,7,6,7,8,6,9,7,6,5,6,3,7,4,9, %U A345411 0,5,6,2,2,3,4,3,8,2,1,2,6,0,8,3,8,9,4 %N A345411 Decimal expansion of the ratio between the position of the peak of the wavelength distribution of black-body radiation and the wavelength corresponding to the position of the peak of this distribution in the frequency domain. %C A345411 Equivalently, equals lambda_peak * nu_peak / c, where lambda_peak are nu_peak are the wavelength and frequency at which the maximum of the Planck function in the wavelength and frequency domains occurs, respectively, and c is the speed of light. %D A345411 Sean M. Stewart and R. Barry Johnson, Blackbody Radiation: A History of Thermal Radiation Computational Aids and Numerical Methods, CRC Press, 2016, eq. (2.39), p. 46. %H A345411 T. Richard Carson, <a href="https://arxiv.org/abs/astro-ph/0011219">Steps to the Planck Function: A Centenary Reflection</a>, arXiv preprint astro-ph/0011219, 2000. See p. 10. %H A345411 Gerhard Kramm and Nicole Mölders, <a href="https://arxiv.org/abs/0901.1863">Planck's blackbody radiation law: Presentation in different domains and determination of the related dimensional constants</a>, arXiv:0901.1863 [physics.hist-ph], 2009. %H A345411 Wikipedia, <a href="https://en.wikipedia.org/wiki/Black-body_radiation">Black-body radiation</a>. %H A345411 Wikipedia, <a href="https://en.wikipedia.org/wiki/Planck%27s_law">Planck's law</a>. %F A345411 Equals (3 + W(-3*exp(-3)))/(5 + W(-5*exp(-5))) = A194567/A094090, where W(x) is Lambert's W-function. %e A345411 0.56825266054974313110465933802170425871512309444119... %t A345411 RealDigits[(3 + ProductLog[-3/E^3])/(5 + ProductLog[-5/E^5]), 10, 100][[1]] %Y A345411 Cf. A094090, A194567. %K A345411 nonn,cons %O A345411 0,1 %A A345411 _Amiram Eldar_, Jun 18 2021