Number of 2n-bead balanced binary strings, rotationally equivalent to complement, inequivalent to reverse and reversed complement.

A045659

Number of 2n-bead balanced binary strings, rotationally equivalent to complement, inequivalent to reverse and reversed complement.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =24a(7) =28a(8) =128a(9) =252a(10) =720a(11) =1364a(12) =3384a(13) =6552a(14) =14644a(15) =29040a(16) =61568a(17) =122400a(18) =253284a(19) =504868a(20) =1028880a(21) =2054416a(22) =4150652a(23) =8294444a(24) =16682552a(25) =33349800a(26) =66902472a(27) =133775964a(28) =267991444a(29) =535920696

External references