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

A045660

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

Terms

    a(0) =0a(1) =0a(2) =0a(3) =12a(4) =32a(5) =120a(6) =300a(7) =784a(8) =1824a(9) =4296a(10) =9720a(11) =21824a(12) =47852a(13) =104832a(14) =226576a(15) =487392a(16) =1042208a(17) =2219520a(18) =4703880a(19) =9942016a(20) =20940152a(21) =43995544a(22) =92206400a(23) =192843776a(24) =402500844a(25) =838655520a(26) =1744509312a(27) =3623427624a(28) =7515501648

External references