Number of 2n-bead balanced binary necklaces which are equivalent to their reversed complement, but not equivalent to their reverse and complement.

A045678

Number of 2n-bead balanced binary necklaces which are equivalent to their reversed complement, but not equivalent to their reverse and complement.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =2a(4) =4a(5) =12a(6) =26a(7) =56a(8) =116a(9) =240a(10) =492a(11) =992a(12) =2010a(13) =4032a(14) =8120a(15) =16256a(16) =32628a(17) =65280a(18) =130800a(19) =261632a(20) =523756a(21) =1047552a(22) =2096096a(23) =4192256a(24) =8386522a(25) =16773120a(26) =33550272a(27) =67100672a(28) =134209464a(29) =268419072

External references