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 A046567 #9 Jul 02 2025 16:01:57 %S A046567 5,5,9,2,5,9,13,19,19,13,17,8,2,19,8,17,21,49,2,35,2,35,49,21,25,2,35, %T A046567 119,35,119,2,35,25,29,95,189,259,259,189,95,29,33,31,71,112,2,259, %U A046567 112,71,31,33,37,157,102,183,2,483,2,483,183,102,157,37,41,2,97,565,285,2 %N A046567 First denominator and then numerator of the 1/4-Pascal triangle (by row), excluding 1's and 4's. %e A046567 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 A046567 Cf. A046563. %K A046567 tabf,nonn %O A046567 1,1 %A A046567 _Mohammad K. Azarian_ %E A046567 More terms from _James Sellers_, Dec 14 1999