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Distinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.
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%I #9 Jun 22 2013 16:05:38

%S 1,3,5,7,105,9,11,495,13,6435,15,1365,15015,45045,17,19,2907,21,

%T 101745,23,5313,168245,1716099,25,18386775,27,8775,42181425,143416845,

%U 29,593775,90135045,882230895,31,13485,849555,18407025,181440675

%N Distinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.

%D L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 83, Problem 25.

%e 1/1; 1/2, 1/2; 1/3, 1/6, 1/3; 1/4, 1/12, 1/12, 1/4; 1/5, 1/20, 1/30, 1/20, 1/5; ...

%Y Cf. A003506, A046202.

%K tabf,nonn,easy

%O 1,2

%A _Mohammad K. Azarian_

%E More terms from _James A. Sellers_, Dec 13 1999