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 A135559 #3 Mar 30 2012 18:51:57 %S A135559 1,4,21,58,59,60,61,62,63,64,65,66,67,68,69,70,71,22,23,24,25,26,27, %T A135559 28,29,30,5,6,7,8,9,2,3,12,39,90,91,92,93,94,95,96,97,98,99,100,101, %U A135559 102,103,40,41,42,43,44,45,46,47,48,13,14,15,16,17,10,11,20,57,72,73,74,75 %N A135559 Atomic numbers in the 32-column Mendeleyev periodic table, beginning with the first term in each column and read down columns. If the number is > 118 then skip to the next column. %C A135559 There are 118 terms. %K A135559 nonn,fini %O A135559 1,2 %A A135559 _Paul Curtz_, Feb 23 2008 %E A135559 Edited by _Omar E. Pol_, Mar 16 2008