OFFSET
1,1
COMMENTS
EXAMPLE
The sequence of terms together with their prime signatures begins:
6: (1,1)
10: (1,1)
14: (1,1)
15: (1,1)
21: (1,1)
22: (1,1)
26: (1,1)
30: (1,1,1)
33: (1,1)
34: (1,1)
35: (1,1)
36: (2,2)
38: (1,1)
39: (1,1)
42: (1,1,1)
46: (1,1)
51: (1,1)
55: (1,1)
57: (1,1)
58: (1,1)
MATHEMATICA
aperQ[q_]:=Array[RotateRight[q, #1]&, Length[q], 1, UnsameQ];
Select[Range[100], !aperQ[Last/@FactorInteger[#]]&]
CROSSREFS
Complement of A329139.
Periodic compositions are A178472.
Periodic binary words are A152061.
Numbers whose binary expansion is periodic are A121016.
Numbers whose prime signature is a Lyndon word are A329131.
Numbers whose prime signature is a necklace are A329138.
KEYWORD
nonn
AUTHOR
Gus Wiseman, Nov 09 2019
STATUS
approved