A137769 - OEIS

%I #8 Jun 22 2013 16:06:10

%S 3,5,3,7,7,5,9,31,9,5,11,49,49,11,7,13,105,71,209,105,71,13,7,15,97,

%T 351,351,97,15,9,17,127,545,1471,545,127,17,9,19,161,799,2561,2561,

%U 799,161,19,11,21,495,199,1121,4159,10625,4159,1121,495,199,21,11

%N Nontrivial odd numbers in writing first the denominator and then the numerator (left to right) of Leibniz's harmonic-like triangle.

%e 1/1; -->

%e 1/2, 1/2; -->

%e 1/3, 5/6, 1/3; --> 3 5

%e 1/4, 7/12, 7/12, 1/4; --> 7 7

%e 1/5, 9/20, 31/30, 9/20, 1/5;

%Y Cf. A137752.

%Y Cf. A046212, A137752, A137753, A137754, A137755, A137756, A137757, A137758, A137759, A137760, A137761, A137762, A137763, A137764, A137765, A137766, A137767: A137768.

%K nonn,tabf,frac,less

%O 1,1

%A _Mohammad K. Azarian_, Feb 13 2008