login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A056361 Number of bracelet structures using exactly six different colored beads. 5

%I #11 Oct 24 2019 23:02:37

%S 0,0,0,0,0,1,3,27,171,1249,8389,56079,360430,2272601,14037552,

%T 85516454,514976658,3074986408,18239677629,107654219304,632996894928,

%U 3711499493421,21716765203045,126880009607690,740528525043982,4319138789721875,25181507049874027,146788327084831744

%N Number of bracelet structures using exactly six different colored beads.

%C Turning over will not create a new bracelet. Permuting the colors of the beads will not change the structure.

%D M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia. [See A056391 for pdf file of Chap. 2]

%H Andrew Howroyd, <a href="/A056361/b056361.txt">Table of n, a(n) for n = 1..200</a>

%F a(n) = A056356(n) - A056355(n).

%Y Column 6 of A152176.

%Y Cf. A056299, A056355, A056356.

%K nonn

%O 1,7

%A _Marks R. Nester_

%E Terms a(25) and beyond from _Andrew Howroyd_, Oct 24 2019

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 02:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)