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 A217513 #22 Oct 11 2023 10:18:41 %S A217513 2,8,20,32,38,56,74,86,116,130,136,166,190,208,238,264,288,318,342, %T A217513 360,384,420,444,492,522,534,588,612,648,690,714,732,768,822,840,894, %U A217513 942,966,1026,1050,1068,1134,1190,1220,1256,1280,1310,1382,1418,1448,1508 %N A217513 Partial sums of nonzero terms in A005926. %C A217513 Sizes of clusters of atoms in diamond structure. %H A217513 Andy Huchala, <a href="/A217513/b217513.txt">Table of n, a(n) for n = 0..98</a> %H A217513 N. J. A. Sloane, <a href="http://dx.doi.org/10.1063/1.527472">Theta series and magic numbers for diamond and certain ionic crystal structures</a>, J. Math. Phys. 28 (1987), 1653-1657. %Y A217513 Cf. A005925-A005927, A217512-A217514. %K A217513 nonn %O A217513 0,1 %A A217513 _N. J. A. Sloane_, Oct 05 2012 %E A217513 More terms from _Andy Huchala_, May 17 2023