This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A056356 #8 Oct 25 2019 16:34:54
%S A056356 1,1,2,3,7,12,37,92,349,1308,5953,28228,144587,760110,4112548,
%T A056356 22571040,125410355,702370208,3959139804,22425417824,127530813841,
%U A056356 727630240536,4163114812854,23876534534362,137228556156385,790200525479706,4557943660928233,26331300028828400
%N A056356 Number of bracelet structures using a maximum of six different colored beads.
%C A056356 Turning over will not create a new bracelet. Permuting the colors of the beads will not change the structure.
%D A056356 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 A056356 Andrew Howroyd, <a href="/A056356/b056356.txt">Table of n, a(n) for n = 0..200</a>
%F A056356 Use de Bruijn's generalization of Polya's enumeration theorem as discussed in reference.
%F A056356 a(n) = Sum_{k=1..6} A152176(n, k) for n > 0. - _Andrew Howroyd_, Oct 25 2019
%Y A056356 Cf. A056294, A152176.
%K A056356 nonn
%O A056356 0,3
%A A056356 _Marks R. Nester_
%E A056356 a(0)=1 prepended and terms a(25) and beyond from _Andrew Howroyd_, Oct 25 2019