A046226 - OEIS

A046226

First denominator and then numerator of elements to right of central elements of 1/2-Pascal triangle.

%I #15 Apr 08 2021 07:28:41

%S 1,1,1,1,2,3,1,1,2,5,1,1,2,11,2,7,1,1,1,9,2,9,1,1,1,20,2,27,2,11,1,1,

%T 2,67,1,19,2,13,1,1,2,147,2,105,2,51,2,15,1,1,1,126,1,78,1,33,2,17,1,

%U 1,1,273,1,204,1,111,2,83,2,19,1,1,1,477,1,315,2

%N First denominator and then numerator of elements to right of central elements of 1/2-Pascal triangle.

%e 1/1; -->

%e 1/1 1/1; --> 1 1

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

%e 1/1 3/2 3/2 1/1; --> 2 3

%e 1/1 5/2 3/1 5/2 1/1; --> ...

%e 1/1 7/2 11/2 11/2 7/2 1/1;

%e 1/1 9/2 9/1 11/1 9/1 9/2 1/1;

%e 1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; ...

%Y Cf. A046213.

%K tabf,nonn,frac,less

%O 1,5

%A _Mohammad K. Azarian_

%E More terms from _Sean A. Irvine_, Apr 07 2021