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 A046601 #21 Mar 31 2017 22:34:07 %S A046601 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, %T A046601 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, %U A046601 1,17,1,17,1,12,1,26,5,1,1,1,1,31,5,86,5,29,1,34,1,29,1,86,5 %N A046601 First numerator and then denominator of the 1/5-Pascal triangle (by row). To get a 1/5-Pascal triangle, replace "2" in the third row of the Pascal triangle with "1/5" and calculate all other rows as in the Pascal triangle. %e A046601 1/1; %e A046601 1/1 1/1; %e A046601 1/1 1/5 1/1; %e A046601 1/1 6/5 6/5 1/1; %e A046601 1/1 11/5 12/5 11/5 1/1; %e A046601 1/1 16/5 23/5 23/5 16/5 1/1; %e A046601 1/1 21/5 39/5 46/5 39/5 21/5 1/1; %e A046601 1/1 26/5 12/1 17/1 17/1 12/1 26/5 1/1; ... %K A046601 nonn,tabf,less %O A046601 1,10 %A A046601 _Mohammad K. Azarian_