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%I #6 Aug 22 2017 20:53:08
%S 0,0,0,0,60,900,8400,63000,417120,2551500,14804700,82764000,450518460,
%T 2404502100,12646078140,65771433000,339165516120,1737485731740,
%U 8855359634100,44952365429940,227475768899460
%N Number of primitive (aperiodic) reversible strings with n beads using exactly 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)*A056312(n/d) where d|n.
%Y Cf. A056316.
%K nonn
%O 1,5
%A _Marks R. Nester_