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 A003673 M4325 #71 Dec 11 2020 02:27:00 %S A003673 0,0,7,2,9,7,3,5,2,5,6 %N A003673 Decimal expansion of fine-structure constant alpha. %D A003673 John Barrow, The Constants of Nature, 367pp, Jonathan Cape, 2002. %D A003673 H. J. Fischbeck and K. Fischbeck, Formulas. Facts and Constants, Springer-Verlag, NY, 2nd ed., 1987. %D A003673 K. R. Lang, Astrophysical Data: Planets and Stars, Springer-Verlag, NY, 1991. %D A003673 Martin J. Rees. Just Six Numbers: the deep forces that shape the universe. Phoenix. 1999 %D A003673 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A003673 NIST, <a href="http://physics.nist.gov/cgi-bin/cuu/Value?alph">fine-structure constant</a> %H A003673 Wikipedia, <a href="http://en.wikipedia.org/wiki/Fine_Structure_Constant">Fine-structure constant</a> %F A003673 alpha = e^2/(4*Pi*E*h*c), where e is the elementary charge (A081823), E is the electric constant (A081799), h is the reduced Planck constant (A254181), c is the speed of light (A003678). - _Ilya Gutkovskiy_, Jul 27 2016 %F A003673 alpha = V_n1/c = A081800/A003678. - _Omar E. Pol_, Mar 11 2018 %e A003673 alpha = 7.29735256... * 10^-3 = 0.00729735256... %t A003673 UnitConvert[Quantity["FineStructureConstant"]] (* requires Mathematica 9+; _Andrey Zabolotskiy_, Aug 15 2016 *) %Y A003673 Cf. A005600, A082726. %K A003673 cons,nonn %O A003673 0,3 %A A003673 _N. J. A. Sloane_, _Mira Bernstein_ %E A003673 Updated May 20 2003 %E A003673 Updated by _Omar E. Pol_, Aug 09 2009, _R. J. Mathar_, Dec 15 2012 %E A003673 Updated by _Arkadiusz Wesolowski_, Feb 08 2016 %E A003673 Definition edited by _N. J. A. Sloane_, Feb 11 2016