A046218 - OEIS

%I #14 Apr 07 2021 19:55:36

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

%T 20,20,27,11,1,1,13,19,67,40,67,19,13,1,1,15,51,105,147,147,105,51,15,

%U 1,1,17,33,78,126,147,126,78,33,17,1,1,19,83,111,204

%N Numerators of elements of 1/2-Pascal triangle (by row).

%e 1/1; --> 1

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

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

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

%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;

%e ...

%Y Cf. A046213.

%K tabl,nonn,frac

%O 1,8

%A _Mohammad K. Azarian_

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