Number of length-n 0..6 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..6.
A215399
Number of length-n 0..6 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..6.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =27a(6) =99a(7) =462a(8) =2205a(9) =11414a(10) =61028a(11) =337089a(12) =1894854a(13) =10794718a(14) =61989059a(15) =357903580a(16) =2073376576a(17) =12037807836
External references
- oeis: A215399