Search: id:A061039
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%I A061039
%S A061039 0,7,16,1,40,55,8,91,112,5,160,187,8,247,280,35,352,391,16,475,
%T A061039 520,7,616,667,80,775,832,11,952,1015,40,1147,1216,143,1360,1435,
%U A061039 56,1591,1672,65,1840,1927,224,2107,2200,85,2392,2491,32,2695,2800
%N A061039 Numerator of 1/9 - 1/n^2.
%C A061039 From Paschen spectrum of hydrogen. Wavelengths in hydrogen spectrum are 
               given by Rydberg's formula 1/wavelength = constant*(1/m^2 - 1/n^2).
%C A061039 Table[Numerator[1/9 - 1/n^2], {n, 3, 60}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), 
               Apr 16 2006
%D A061039 J. E. Brady and G. E. Humiston, General Chemistry, 3rd. ed., Wiley; p. 
               78.
%H A061039 J. J. O'Connor and E. F. Robertson, <a href="http://www-groups.dcs.st-andrews.ac.uk/
               ~history/Mathematicians/Rydberg.html">Johannes Robert Rydberg</a>
%H A061039 Eric Weisstein's World of Physics, <a href="http://scienceworld.wolfram.com/
               physics/BalmerFormula.html">Balmer Formula</a>
%F A061039 a(n) <= n^2-9; if n is not divisible by 3 then a(n) = n^2-9 - Stefan 
               Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 16 2006
%Y A061039 Cf. A061035-A061050.
%Y A061039 Sequence in context: A087485 A156377 A069526 this_sequence A063593 A070417 
               A101681
%Y A061039 Adjacent sequences: A061036 A061037 A061038 this_sequence A061040 A061041 
               A061042
%K A061039 nonn,frac,nice
%O A061039 3,2
%A A061039 N. J. A. Sloane (njas(AT)research.att.com), May 26 2001

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