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 A028612 #6 Feb 20 2020 21:15:33 %S A028612 1,8,24,48,120,256,416,736,1112,1624,2384,2792,3904,4560,6080,6352, %T A028612 9176,9296,13688,13728,18352,19168,25656,23632,32992,31400,38800, %U A028612 39664,49024,48400,61632,58512,73368,80112,86832,84768,108472,99808,122784,122240,143504,137200 %N A028612 Expansion of (theta_3(z)*theta_3(11z) + theta_2(z)*theta_2(11z))^4. %H A028612 Jinyuan Wang, <a href="/A028612/b028612.txt">Table of n, a(n) for n = 0..1000</a> %o A028612 (PARI) a(n) = polcoeff((1 + 2*x*Ser(qfrep([2, 1; 1, 6], n, 1)))^4, n); \\ _Jinyuan Wang_, Feb 20 2020 %Y A028612 Cf. A028609, A028610, A028611. %K A028612 nonn %O A028612 0,2 %A A028612 _N. J. A. Sloane_ %E A028612 More terms from _Jinyuan Wang_, Feb 20 2020