%I #2 Mar 30 2012 17:30:25
%S 6,252,272,858,2772,4004,6006,289982,2370732,2629262,6039306,27999972,
%T 28233282,2704884072,20278187202,20591819502,2592587852952,
%U 2936231326392,21809166190812,27237788773272,229145919541922
%N Nontrivial palindromic denominators in Leibniz's harmonic triangle.
%Y Cf. A007622.
%K nonn,base
%O 1,1
%A _Robert G. Wilson v_, Aug 21 2000