T(n,k) = number of length-n 0..k arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree").

A215228

T(n,k) = number of length-n 0..k arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree").

Terms

    a(0) =2a(1) =3a(2) =2a(3) =4a(4) =6a(5) =0a(6) =5a(7) =12a(8) =6a(9) =0a(10) =6a(11) =20a(12) =24a(13) =12a(14) =0a(15) =7a(16) =30a(17) =60a(18) =72a(19) =0a(20) =0a(21) =8a(22) =42a(23) =120a(24) =240a(25) =120a(26) =18a(27) =0a(28) =9a(29) =56

External references