cp's OEIS Frontend

A137765 Nontrivial numbers of the elements to the right of the central elements in writing first the denominator and then the numerator(left to right) of Leibniz's harmonic-like triangle. That is, the nontrivial elements of A137764.

%I A137765 #10 Dec 10 2016 19:01:55
%S A137765 2,3,12,7,4,20,9,5,60,49,30,11,6,105,71,42,13,7,280,351,168,97,56,15,
%T A137765 8,504,545,252,127,72,17,9,1260,2561,840,799,360,161,90,19,10,2310,
%U A137765 4159,1320,1121,495,199,110,21,11
%N A137765 Nontrivial numbers of the elements to the right of the central elements in writing first the denominator and then the numerator(left to right) of Leibniz's harmonic-like triangle. That is, the nontrivial elements of A137764.
%e A137765 1/1; -->
%e A137765 1/2, 1/2;  --> 2
%e A137765 1/3, 5/6, 1/3; --> 3
%e A137765 1/4, 7/12, 7/12, 1/4; --> ...
%e A137765 1/5, 9/20, 31/30, 9/20, 1/5;
%Y A137765 Cf. A046201; A046204; A046205; A046206; A046208; A046212; A137752; A137753; A137754; A137755; A137756; A137757; A137758; A137759, A137760; A137761; A137762; A137763; A137764.
%K A137765 nonn,tabf,frac,less
%O A137765 1,1
%A A137765 _Mohammad K. Azarian_, Feb 13 2008