%I A061043
%S A061043 0,11,24,39,56,3,96,119,144,171,8,231,264,299,336,3,416,459,504,
%T A061043 551,24,651,704,759,816,7,936,999,1064,1131,48,1271,1344,1419,1496,
%U A061043 63,1656,1739,1824,1911,16,2091,2184,2279,2376,99,2576,2679,2784
%N A061043 Numerator of 1/25 - 1/n^2.
%C A061043 From Pfund spectrum of hydrogen. Wavelengths in hydrogen spectrum are 
               given by Rydberg's formula 1/wavelength = constant*(1/m^2 - 1/n^2).
%C A061043 a(n)=(n+5)^2-25=n*(n+10) except a(5p) p pos. Second (with m=5) of this 
               kind after AO61039,Paschen (m=3) and before A061047,Hansen-Strong 
               (m=7). For the fourth,what is the value of m in 1/m^2-1/n^2 ? m=9? 
               [From Paul Curtz (bpcrtz(AT)free.fr), Nov 01 2008]
%D A061043 J. E. Brady and G. E. Humiston, General Chemistry, 3rd. ed., Wiley; p. 
               78.
%H A061043 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 A061043 Eric Weisstein's World of Physics, <a href="http://scienceworld.wolfram.com/
               physics/BalmerFormula.html">Balmer Formula</a>
%Y A061043 Cf. A061035-A061050.
%Y A061043 Sequence in context: A112134 A063307 A157756 this_sequence A098603 A053061 
               A055820
%Y A061043 Adjacent sequences: A061040 A061041 A061042 this_sequence A061044 A061045 
               A061046
%K A061043 nonn,frac,nice
%O A061043 5,2
%A A061043 N. J. A. Sloane (njas(AT)research.att.com), May 26 2001