A137755 - OEIS

%I #7 Jun 22 2013 16:06:10

%S 5,7,7,9,31,9,11,49,49,11,13,71,209,71,13,15,97,351,351,97,15,17,127,

%T 545,1471,545,127,17,19,161,799,2561,2561,799,161,19,21,199,1121,4159,

%U 10625,4159,1121,199,21

%N Nontrivial numerators (left to right) of Leibniz's harmonic-like triangle.

%e 1/1; -->

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

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

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

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

%Y Cf. A003506; A007622; A046201; A046204; A046205; A046206; A046208; A046212; A137752; A137753; A137754.

%K frac,nonn,tabl

%O 1,1

%A _Mohammad K. Azarian_, Feb 10 2008