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 A028578 #5 Jul 08 2025 18:37:44 %S A028578 1,0,0,12,6,0,48,48,18,64,96,108,44,0,192,240,90,192,384,396,144,0, %T A028578 432,528,212,384,672,792,288,0,960,960,330,832,1152,1152,418,0,1584, %U A028578 1680,528,1152,1920,1836,588,0,2112 %N A028578 Expansion of (theta_3(z)*theta_3(2z)+theta_2(z)*theta_2(2z))^3. %K A028578 nonn %O A028578 0,4 %A A028578 _N. J. A. Sloane_