This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A046218 #14 Apr 07 2021 19:55:36 %S A046218 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 A046218 20,20,27,11,1,1,13,19,67,40,67,19,13,1,1,15,51,105,147,147,105,51,15, %U A046218 1,1,17,33,78,126,147,126,78,33,17,1,1,19,83,111,204 %N A046218 Numerators of elements of 1/2-Pascal triangle (by row). %e A046218 1/1; --> 1 %e A046218 1/1 1/1; --> 1 1 %e A046218 1/1 1/2 1/1; --> 1 1 1 %e A046218 1/1 3/2 3/2 1/1; --> 1 3 3 1 %e A046218 1/1 5/2 3/1 5/2 1/1; --> ... %e A046218 1/1 7/2 11/2 11/2 7/2 1/1; %e A046218 1/1 9/2 9/1 11/1 9/1 9/2 1/1; %e A046218 1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; %e A046218 ... %Y A046218 Cf. A046213. %K A046218 tabl,nonn,frac %O A046218 1,8 %A A046218 _Mohammad K. Azarian_ %E A046218 More terms from _Sean A. Irvine_, Apr 07 2021