Number of primitive (period n) step cyclic shifted sequence structures using exactly two different symbols.

A056444

Number of primitive (period n) step cyclic shifted sequence structures using exactly two different symbols.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =2a(4) =2a(5) =5a(6) =4a(7) =10a(8) =9a(9) =22a(10) =14a(11) =78a(12) =36a(13) =124a(14) =180a(15) =343a(16) =260a(17) =1329a(18) =804a(19) =3732a(20) =4428a(21) =9742a(22) =8384a(23) =47364a(24) =33778a(25) =108292a(26) =138756a(27) =408244a(28) =331184a(29) =2251604

External references