References to A000048

Number of n-bead necklaces with beads of 2 colors and primitive period n, when turning over is not allowed but the two colors can be interchanged.
1, 1, 1, 1, 2, 3, 5, 9, 16, 28, 51, 93, 170, 315, 585, 1091, 2048, 3855, 7280, 13797


6 seqfan posts

Sat Apr 21 15:43:33 CEST 2012    [seqfan] Re: New sequence?
Sat Apr 21 09:57:58 CEST 2012    [seqfan] Re: New sequence?
Fri Apr 20 23:00:19 CEST 2012    [seqfan] Re: New sequence?
Thu Apr 19 21:56:42 CEST 2012    [seqfan] New sequence?
Fri Oct 29 05:35:16 CEST 2010    [seqfan] Implementing first 500 sequences in Java
Mon Jan 19 18:40:38 CET 2009    [seqfan] How to generate A000047?

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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