cp's OEIS Frontend

A046628 Distinct odd numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/5-Pascal triangle (by row).

%I A046628 #9 Jul 02 2025 16:01:57
%S A046628 1,5,11,23,39,21,17,29,31,63,231,117,153,41,501,279,139,51,693,187,
%T A046628 291,7887,1111,605,347,61,16731,4251,1573,30173,12831,1981,71,12727,
%U A046628 10439,34853,3731,1561,491,109,621,81,3621,16881,4323,91,66861,5111,879
%N A046628 Distinct odd numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/5-Pascal triangle (by row).
%e A046628 1/1; 1/1 1/1; 1/1 1/5 1/1; 1/1 6/5 6/5 1/1; 1/1 11/5 12/5 11/5 1/1; 1/1 16/5 23/5 23/5 16/5 1/1; 1/1 21/5 39/5 46/5 39/5 21/5 1/1; 1/1 26/5 12/1 17/1 17/1 12/1 26/5 1/1; ...
%Y A046628 Cf. A046601.
%K A046628 tabf,nonn
%O A046628 1,2
%A A046628 _Mohammad K. Azarian_
%E A046628 More terms from _James Sellers_, Dec 16 1999