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 A046598 #9 Jul 02 2025 16:01:57 %S A046598 4,5,4,5,4,9,4,5,9,4,13,4,19,4,19,4,13,4,17,4,8,19,8,17,4,21,4,49,4, %T A046598 35,35,49,4,21,4,25,4,35,119,4,35,119,4,35,25,4,29,4,95,4,189,4,259,4, %U A046598 259,4,189,4,95,4,29,4,33,4,31,71,112,259,112,71,31,33,4,37,4,157,4,102 %N A046598 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 1's and 2's. %e A046598 1/1; 1/1 1/1; 1/1 1/4 1/1; 1/1 5/4 5/4 1/1; 1/1 9/4 5/2 9/4 1/1; 1/1 13/4 19/4 19/4 13/4 1/1; 1/1 17/4 8/1 19/2 8/1 17/4 1/1; 1/1 21/4 49/4 35/2 35/2 49/4 21/4 1/1; ... %Y A046598 Cf. A046563. %K A046598 tabf,nonn %O A046598 1,1 %A A046598 _Mohammad K. Azarian_ %E A046598 More terms from _James Sellers_, Dec 14 1999