Number of ternary necklaces with n beads of each color and no adjacent beads of the same color (i.e., no substrings 00, 11, 22).
A110710
Number of ternary necklaces with n beads of each color and no adjacent beads of the same color (i.e., no substrings 00, 11, 22).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =16a(4) =70a(5) =348a(6) =1948a(7) =11444a(8) =70380a(9) =445944a(10) =2896590a(11) =19186740a(12) =129186596a(13) =881808728a(14) =6089851874a(15) =42482906040a(16) =298976142764
External references
- oeis: A110710