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 A028279 #8 Jul 02 2025 16:01:55 %S A028279 4,6,10,6,16,16,8,32,8,10,40,86,110,86,40,10,50,126,196,196,126,50,12, %T A028279 176,322,392,322,176,12,498,714,714,498,14,86,310,1212,1428,1212,310, %U A028279 86,14,100,396,2640,2640,396,100,16,496,2992,5280,2992,496,16,18,148 %N A028279 Even elements in 4-Pascal triangle A028275 (by row). %K A028279 nonn,tabf %O A028279 0,1 %A A028279 _Mohammad K. Azarian_ %E A028279 More terms from _James Sellers_