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 A296146 #6 Dec 24 2017 16:07:16
%S A296146 1,5363,95304160,2254635672135,61689337799825736,
%T A296146 1854290094982330189184,59529536963190914931717120,
%U A296146 2006426039057377710970239751995,70206501544183654687465441723567000,2530662094366411886472214155427418011488,93449587615256254621892607439280048712775680
%N A296146 Number of configurations, excluding reflections and color swaps, of n beads each of six colors on a string.
%C A296146 Power Group Enumeration applies here.
%D A296146 E. Palmer and F. Harary, Graphical Enumeration, Academic Press, 1973.
%H A296146 Marko Riedel et al., <a href="https://math.stackexchange.com/questions/2530872/">Unique rows of pebbles</a>
%F A296146 With Z(S_{q,|m}) = [w^q] exp(Sum_{d|m} a_d w^d/d) and parameters n,k we have for nk even, (1/2) ((nk!)/k!/n!^k + (nk/2)! 2^(nk/2) [a_2^(nk/2)] Z(S_{k,|2})(Z_{n,|2}, a_2^n/n!) and for nk odd, (1/2) ((nk!)/k!/n!^k + ((nk-1)/2)! 2^((nk-1)/2) [a_1 a_2^((nk-1)/2)] Z(S_{k,|2})(Z_{n,|2}, a_2^n/n!). This sequence has k=6.
%Y A296146 Cf. A045723, A296143, A296144, A296145.
%K A296146 nonn
%O A296146 1,2
%A A296146 _Marko Riedel_, Dec 05 2017