Number of circular permutations of length n with no consecutive triples i,i+2,i+4 (mod n) or i,i-2,i-4 (mod n).
A174079
Number of circular permutations of length n with no consecutive triples i,i+2,i+4 (mod n) or i,i-2,i-4 (mod n).
Terms
- a(0) =12a(1) =84a(2) =494a(3) =3696a(4) =30574
External references
- oeis: A174079