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Distinct numbers in writing first numerator and then denominator of 1/2-Pascal triangle (by row).
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%I #8 Jun 22 2013 16:05:39

%S 1,2,3,5,7,11,9,27,20,13,19,67,40,15,51,105,147,17,33,78,126,83,111,

%T 204,273,21,305,315,477,546,23,123,407,935,792,1023,25,73,265,671,

%U 2519,1815,2046,171,338,936,3861,6149,29,99,847,1274,5733,5005,13871,7722

%N Distinct numbers in writing first numerator and then denominator of 1/2-Pascal triangle (by row).

%e 1/1; 1/1 1/1; 1/1 1/2 1/1; 1/1 3/2 3/2 1/1; 1/1 5/2 3/1 5/2 1/1; 1/1 7/2 11/2 11/2 7/2 1/1; 1/1 9/2 9/1 11/1 9/1 9/2 1/1; 1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; ...

%Y Cf. A046213.

%K tabf,nonn,easy

%O 1,2

%A _Mohammad K. Azarian_

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