%I #6 Apr 09 2014 10:12:25
%S 1,3,24,120,120,840,840,840,280,2520,27720,27720,360360,360360,360360,
%T 720720,12252240,4084080,77597520,15519504,15519504,5173168,118982864,
%U 356948592,8923714800,80313433200,80313433200,80313433200,2329089562800
%N a(n) = denominator of sum{k=1 to n} 1/A127518(k).
%Y Cf. A127518, A127519.
%K frac,nonn
%O 1,2
%A _Leroy Quet_, Jan 17 2007
%E Extended by _Ray Chandler_, Jan 22 2007