A137754 - OEIS

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

%S 1,1,1,1,5,1,1,7,7,1,1,9,31,9,1,1,11,49,49,11,1,1,13,71,209,71,13,1,1,

%T 15,97,351,351,97,15,1,1,17,127,545,1471,545,127,17,1,1,19,161,799,

%U 2561,2561,799,161,19,1,1,21,199,1121,4159,10625,4159,1121,199,21,1

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

%e 1/1; --> 1

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

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

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

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

%Y Cf. A137752.

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

%K frac,nonn,tabl

%O 1,5

%A _Mohammad K. Azarian_, Feb 10 2008