A045666 Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally inequivalent to reverse, complement and reversed complement.

0, 0, 0, 0, 0, 80, 384, 2352, 9856, 42840, 169280, 676720, 2630688, 10265216, 39777248, 154498200, 599556096, 2330826752, 9068386320, 35332969392, 137817005440, 538204062984, 2103970896544, 8233197139552, 32247052083840

Offset

0,6

Links

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

Formula

a(n) = 2*n*A045684(n).

a(n) = A007727(n) - A045662(n) - A045663(n) - A045664(n) + 2*A045665(n). - Andrew Howroyd, Sep 14 2019

Crossrefs

Cf. A007727, A045662, A045663, A045664, A045665, A045684.

Sequence in context: A157953 A233958 A233951 * A045657 A273292 A234333

Adjacent sequences: A045663 A045664 A045665 * A045667 A045668 A045669

Keyword

nonn

Author

David W. Wilson

Status

approved