Number of length-n 0..n arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..n.
A215394
Number of length-n 0..n arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =27a(6) =99a(7) =463a(8) =2233a(9) =11875a(10) =66925a(11) =402364a(12) =2555606a(13) =17115329a(14) =120368115a(15) =886510373a(16) =6819231506
External references
- oeis: A215394