OFFSET
1,1
COMMENTS
Equivalently, the cyclic group of order n acts on the set of length n binary sequences. T(n,k) is the number of orbits that have k elements.
LINKS
EXAMPLE
2
2 1
2 0 2
2 1 0 3
2 0 0 0 6
2 1 2 0 0 9
2 0 0 0 0 0 18
2 1 0 3 0 0 0 30
2 0 2 0 0 0 0 0 56
2 1 0 0 6 0 0 0 0 99
2 0 0 0 0 0 0 0 0 0 186
2 1 2 3 0 9 0 0 0 0 0 335
MATHEMATICA
Needs["Combinatorica`"];
f[list_] := Sort[NestList[RotateLeft, list, Length[list]-1]]; Flatten[Table[Distribution[Map[Length, Map[Union, Union[Map[f, Strings[{0, 1}, n]]]]], Range[n]], {n, 1, 12}]]
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Geoffrey Critzer, Jan 01 2012
STATUS
approved