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 A274866 #3 Jul 09 2016 17:40:17 %S A274866 1,1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,16384,32768,65536, %T A274866 131072,262400,525312,1051648,2105344,4214784,8437760,16891904, %U A274866 33816576,67698688,135726080,272175872,545883008,1094922880,2196262528,4405472896,8836975232 %N A274866 Number of set partitions of [n] such that the difference between each element and its index (in the partition) is a multiple of nine. %Y A274866 Column k=9 of A274859. %K A274866 nonn %O A274866 0,3 %A A274866 _Alois P. Heinz_, Jul 09 2016