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 A194448 #19 Nov 30 2013 21:30:34 %S A194448 0,1,1,1,2,1,2,1,2,1,4,1,2,1,4,1,2,1,4,1,1,7,1,2,1,4,1,2,1,8,1,2,1,4, %T A194448 1,1,7,1,2,1,1,12,1,2,1,4,1,2,1,8,1,1,3,1,1,14,1,2,1,4,1,1,7,1,2,1,1, %U A194448 12,1,2,1,4,1,2,1,1,21,1,2,1,4,1,2 %N A194448 Number of parts > 1 in the n-th region of the shell model of partitions. %C A194448 Also triangle read by rows: T(n,k) = number of parts > 1 in the k-th region of the last section of the set of partitions of n. %e A194448 Written as a triangle: %e A194448 0; %e A194448 1; %e A194448 1; %e A194448 1,2; %e A194448 1,2; %e A194448 1,2,1,4; %e A194448 1,2,1,4; %e A194448 1,2,1,4,1,1,7; %e A194448 1,2,1,4,1,2,1,8; %e A194448 1,2,1,4,1,1,7,1,2,1,1,12; %e A194448 1,2,1,4,1,2,1,8,1,1,3,1,1,14; %e A194448 1,2,1,4,1,1,7,1,2,1,1,12,1,2,1,4,1,2,1,1,21; %Y A194448 Row sums give A138135. Row n has length A187219(n). %Y A194448 Cf. A000041, A002865, A135010, A138121, A138137, A138879, A186114, A186412, A193870, A194436, A194437, A194438, A194439, A194446, A194447, A194449. %K A194448 nonn,tabf %O A194448 1,5 %A A194448 _Omar E. Pol_, Dec 10 2011