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%I #10 Aug 22 2017 20:53:08
%S 5,10,70,310,1620,7790,39370,195300,978050,4882740,24421870,122069940,
%T 610390620,3051757490,15258982680,76293945000,381470703120,
%U 1907348623450,9536748046870,47683715818440
%N Number of primitive (aperiodic) reversible strings with n beads using a maximum of five different colors.
%C A string and its reverse are considered to be equivalent.
%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]
%F Sum mu(d)*A032122(n/d) where d|n.
%Y Column 5 of A284871.
%Y Cf. A045625.
%K nonn
%O 1,1
%A _Marks R. Nester_
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