The index of Simon's piecewise testability congruence, for words of length 2 over an n-letter alphabet.

A229954

The index of Simon's piecewise testability congruence, for words of length 2 over an n-letter alphabet.

Terms

    a(0) =3a(1) =16a(2) =152a(3) =2326a(4) =52132a(5) =1602420a(6) =64529264

External references