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 A324490 #4 Mar 13 2019 06:21:52 %S A324490 0,64,4096,438976,32768000,2537716544,192699928576,14662949322176, %T A324490 1114512556032000,84722519068761664,6440005257691303936, %U A324490 489526700523945017536,37210462578386173952000,2828485190904971429628224 %N A324490 A324487(3*n). %H A324490 M. Baake, J. Hermisson, P. Pleasants, <a href="http://dx.doi.org/10.1088/0305-4470/30/9/016">The torus parametrization of quasiperiodic LI-classes</a>, J. Phys. A 30 (1997), no. 9, 3029-3056. See Tables 5 and 6. %Y A324490 Cf. A001350, A324487, A324491, A324492. %K A324490 nonn %O A324490 0,2 %A A324490 _N. J. A. Sloane_, Mar 12 2019