Number of primitive (aperiodic) word structures of length n using an infinite alphabet.
A082951
Number of primitive (aperiodic) word structures of length n using an infinite alphabet.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =13a(5) =51a(6) =197a(7) =876a(8) =4125a(9) =21142a(10) =115922a(11) =678569a(12) =4213381a(13) =27644436a(14) =190898444a(15) =1382958489a(16) =10480138007a(17) =82864869803a(18) =682076784814
External references
- oeis: A082951