A045660 Number of 2n-bead balanced binary strings, rotationally equivalent to reversed complement, inequivalent to reverse and complement.

0, 0, 0, 12, 32, 120, 300, 784, 1824, 4296, 9720, 21824, 47852, 104832, 226576, 487392, 1042208, 2219520, 4703880, 9942016, 20940152, 43995544, 92206400, 192843776, 402500844, 838655520, 1744509312, 3623427624, 7515501648

Offset

0,4

Links

Andrew Howroyd, Table of n, a(n) for n = 0..200

Formula

From Andrew Howroyd, Sep 15 2019: (Start)

Inverse Moebius transform of A045669.

a(n) = A045655(n) - A045656(n). (End)

Crossrefs

Cf. A045655, A045656, A045669.

Sequence in context: A303079 A268769 A045669 * A334307 A192213 A050690

Adjacent sequences: A045657 A045658 A045659 * A045661 A045662 A045663

Keyword

nonn

Author

David W. Wilson

Status

approved