%I A130503
%S A130503 1,2,6,12,12,4,28,56,504,2520,27720,27720,27720,27720,5544,11088,188496,
%T A130503 62832,1193808,5969040,1989680,1989680,45762640,137287920,686439600,
%U A130503 8923714800,80313433200,80313433200,2329089562800,2329089562800
%N A130503 a(n) = denominator of the sum of reciprocals of those positive integers 
               which are <= n and are not among the first (n-1) terms of A130502.
%H A130503 Diana Mecum, <a href="b130503.txt">Table of n, a(n) for n = 1..200</a>
%H A130503 Leroy Quet, <a href="http://www.prism-of-spirals.net/">Home Page</a> 
               (listed in lieu of email address)
%e A130503 The positive integers which are <= 9 and are missing from the first 8 
               terms of the (numerator) sequence A130502 are 2,3,4,6,7,8,9. So a(9) 
               is the denominator of (1/2 +1/3 +1/4 +1/6 +1/7 +1/8 + 1/9 = 821/504).
%Y A130503 Cf. A130502.
%Y A130503 Sequence in context: A009230 A069491 A127698 this_sequence A074385 A057340 
               A092427
%Y A130503 Adjacent sequences: A130500 A130501 A130502 this_sequence A130504 A130505 
               A130506
%K A130503 frac,nonn
%O A130503 1,2
%A A130503 Leroy Quet May 31 2007
%E A130503 More terms from Diana Mecum (diana.mecum(AT)gmail.com), Jun 14 2007