Number of squarefree words of length n in a 6-ary alphabet.

A214940

Number of squarefree words of length n in a 6-ary alphabet.

Terms

    a(0) =6a(1) =30a(2) =150a(3) =720a(4) =3480a(5) =16680a(6) =80040a(7) =383520a(8) =1838160a(9) =8807400a(10) =42202560a(11) =202209720a(12) =968880960a(13) =4642304520a(14) =22243228680a(15) =106576361760a(16) =510651000360

External references