%I #11 Mar 30 2012 18:52:05
%S 1,36,9,0,9,36,1,144,225,12,441,576,81,900,1089,48,1521,1764,75,2304,
%T 2601,324,3249,3600,147,4356,4761,64,5625,6084,729,7056,7569,100,8649,
%U 9216,363,10404,11025
%N Denominators of an extended Rydberg-Ritz spectrum of hydrogen atom: 1/9 -1/n^2.
%C Companion to A171709. The fractional antispectrum is 0, -5/36, -8/9, -1, -8/9, -5/36, before ( (A061039/A061040) =0, 7/144, ). For case n=0 , -1 must be taken. Paschen case: see A174413.
%F a(n) = A061040(n), n>=3.
%Y Cf. A061040.
%K nonn,frac
%O -3,2
%A _Paul Curtz_
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