Number of length-n 0..7 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..7.
A215400
Number of length-n 0..7 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..7.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =27a(6) =99a(7) =463a(8) =2232a(9) =11839a(10) =66176a(11) =390465a(12) =2394678a(13) =15154985a(14) =98121614a(15) =646053822a(16) =4304919741a(17) =28930077597
External references
- oeis: A215400