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 A046226 #15 Apr 08 2021 07:28:41 %S A046226 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 A046226 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 A046226 1,1,273,1,204,1,111,2,83,2,19,1,1,1,477,1,315,2 %N A046226 First denominator and then numerator of elements to right of central elements of 1/2-Pascal triangle. %e A046226 1/1; --> %e A046226 1/1 1/1; --> 1 1 %e A046226 1/1 1/2 1/1; --> 1 1 %e A046226 1/1 3/2 3/2 1/1; --> 2 3 %e A046226 1/1 5/2 3/1 5/2 1/1; --> ... %e A046226 1/1 7/2 11/2 11/2 7/2 1/1; %e A046226 1/1 9/2 9/1 11/1 9/1 9/2 1/1; %e A046226 1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; ... %Y A046226 Cf. A046213. %K A046226 tabf,nonn,frac,less %O A046226 1,5 %A A046226 _Mohammad K. Azarian_ %E A046226 More terms from _Sean A. Irvine_, Apr 07 2021