%I A061040
%S A061040 1,144,225,12,441,576,81,900,1089,48,1521,1764,75,2304,2601,324,
%T A061040 3249,3600,147,4356,4761,64,5625,6084,729,7056,7569,100,8649,9216,
%U A061040 363,10404,11025,1296,12321,12996,507,14400,15129,588,16641,17424
%N A061040 Denominator of 1/9 - 1/n^2.
%D A061040 Friedrich Paschen, Zur Kenntis ultraroter Linienspktren, Annalen der 
               Physik 27, pp. 537-570 (1908). [From Paul Curtz (bpcrtz(AT)free.fr), 
               Dec 04 2008]
%Y A061040 See A061039 for comments, references, links.
%Y A061040 Sequence in context: A135780 A069701 A124144 this_sequence A159456 A064563 
               A008436
%Y A061040 Adjacent sequences: A061037 A061038 A061039 this_sequence A061041 A061042 
               A061043
%K A061040 nonn,frac,nice
%O A061040 3,2
%A A061040 N. J. A. Sloane (njas(AT)research.att.com), May 26 2001