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 A194853 #26 Mar 11 2014 01:34:19 %S A194853 0,1,0,2,-2,1,0,2,0,4,-1,2,-4,1,0,2,-2,2,0,3,0,6 %N A194853 Pair(i,j): a folded version of the shell model of partitions (see comments for precise definition). %C A194853 In the shell model of partitions (Cf. A135010, A138121) the n-th largest part has length = A141285(n). After the folding of the partitions the pair(i,j) shows the horizontal location of the n-th largest part at the level n of the structure (see example). %H A194853 Omar E. Pol, <a href="http://www.polprimos.com/imagenespub/polpalpt.jpg">Illustration of the shell model of partitions before of the folding of all partitions (for integers = 1..12)</a> %F A194853 A141285(n) = abs(i(n)) + j(n). %e A194853 ------------------------------------------- %e A194853 Pair The structure %e A194853 n A141285(n) (i, j) looks like this %e A194853 ------------------------------------------- %e A194853 1 1 0, 1, * %e A194853 2 2 0, 2, ** %e A194853 3 3 -2, 1, *** %e A194853 4 2 0, 2, ** %e A194853 5 4 0, 4, **** %e A194853 6 3 -1, 2, *** %e A194853 7 5 -4, 1 ***** %e A194853 8 2 0, 2 ** %e A194853 9 4 -2, 2 **** %e A194853 10 3 0, 3 *** %e A194853 11 6 0, 6 ****** %Y A194853 Cf. A135010, A138121, A141285. %K A194853 sign,more %O A194853 1,4 %A A194853 _Omar E. Pol_, Feb 12 2012