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 A138102 #7 Dec 30 2012 02:43:38 %S A138102 2,2,8,8,8,8,8,8,8,8,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18, %T A138102 18,18,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32, %U A138102 32,32,32,32,32,32,32,32,32,32,32 %N A138102 The number 2*k^2 repeated 2*k^2 times, k=1 to 4. %C A138102 Vaguely related to the number of elements in the Janet table A138102. %C A138102 Essentially the same as A137575. %C A138102 a(n)= (A138101=3,4,13,14,15,16,17,) - (A138100=1,2,5,6,7,8,9,) . [From _Paul Curtz_, Oct 11 2009] %H A138102 Albert Tarantola, <a href="http://www.ipgp.fr/~tarantola/Files/Professional/Mendeleev/">PSE of Elements (Janet form)</a>. %H A138102 Anonymous, <a href="http://www.webelements.com/nexus/?q=node/981">Janet periodic table</a>, Web Elements Chemistry Nexus %Y A138102 Cf. A138101, A137325, A137583, A166071, A001105. %K A138102 nonn,less,fini,full %O A138102 1,1 %A A138102 _Paul Curtz_, May 03 2008 %E A138102 Edited by _R. J. Mathar_, Oct 07 2009