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 A138300 #2 Mar 30 2012 18:51:57 %S A138300 2,8,8,8,8,8,8,8,8,8,8,8,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18, %T A138300 18,18,18,18,18,18,18,18,18,18,18,18,32,32,32,32,32,32,32,32,32,32,32, %U A138300 32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32 %N A138300 Differences of each column for atomic numbers of Mendeleyev-Seaborg 7*32 elements periodic table,first extension,A138096 table.86 terms.Horizontal lecture. %e A138300 First column differences: 2, 8, 8, 18, 18, 32; second: 8, 8, 18, 18, 32. %e A138300 Table: 1 2, 11 8's, 27 18's, 47 32's %e A138300 2.............................................................................................8 %e A138300 8..8...........................................................................8..8..8..8..8..8 %e A138300 8..8..........................................................................18.18.18.18.18.18 %e A138300 18.18.18...........................................18.18.18.18.18.18.18.18.18.18.18.18.18.18.18 %e A138300 18.18.18...........................................32.32.32.32.32.32.32.32.32.32.32.32.32.32.32 %e A138300 32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32.32 %Y A138300 Cf. A093907, A137508, A137575, A137583, A138102. %K A138300 nonn,uned %O A138300 0,1 %A A138300 _Paul Curtz_, May 07 2008