Number of length n necklaces with entries covering an initial interval of positive integers and no adjacent entries equal.
A330620
Number of length n necklaces with entries covering an initial interval of positive integers and no adjacent entries equal.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =10a(4) =54a(5) =392a(6) =3378a(7) =34120a(8) =393738a(9) =5112406a(10) =73756026a(11) =1170482186a(12) =20263782630a(13) =380047964920
External references
- oeis: A330620