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 A122453 #2 Mar 31 2012 13:23:38 %S A122453 1,0,0,1,1,1,1,1,1,1,2,3,4,3,2,2,3,4,4,3,2,4,8,13,15,13,8,4,4,8,13,16, %T A122453 16,13,8,4,7,17,32,45,51,45,32,17,7,8,20,38,56,67,67,56,38,20,8,12,34, %U A122453 72,117,156,171,156,117,72,34,12,14,41,88,147,203,237,237,203,147,88,41 %N A122453 Triangular array related to A122402 as A079025 relates to A122172; sums A079139 values associated with cyclic partitions. %e A122453 The table begins: %e A122453 1 %e A122453 0 0 %e A122453 1 1 1 %e A122453 1 1 1 1 %e A122453 2 3 4 3 2 %e A122453 2 3 4 4 3 2 %e A122453 4 8 13 15 13 8 4 %e A122453 4 8 13 16 16 13 8 4 %e A122453 7 17 32 45 51 45 32 17 7 %e A122453 8 20 38 56 67 67 56 38 20 8 %e A122453 12 34 72 117 156 171 156 117 72 34 12 %e A122453 14 41 88 147 203 237 237 203 147 88 41 14 %Y A122453 Cf. A002865 A074139 A079025 A122172 A122402. %K A122453 nonn,tabl,uned %O A122453 0,11 %A A122453 _Alford Arnold_, Sep 07 2006