Number of length n 0..5 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..5.
A215398
Number of length n 0..5 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..5.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =27a(6) =98a(7) =442a(8) =1968a(9) =9214a(10) =43263a(11) =205749a(12) =979979a(13) =4684197a(14) =22406501a(15) =107279908a(16) =513768237a(17) =2461123503a(18) =11790546197
External references
- oeis: A215398