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%I A056314 #10 Aug 22 2017 20:53:08
%S A056314 3,3,15,39,132,357,1131,3276,9945,29508,88935,265668,798252,2391441,
%T A056314 7177584,21523320,64579920,193709763,581160255,1743392040,5230264026,
%U A056314 15690529437,47071855131,141214764600
%N A056314 Number of primitive (aperiodic) reversible strings with n beads using a maximum of three different colors.
%C A056314 A string and its reverse are considered to be equivalent.
%D A056314 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 A056314 Sum mu(d)*A032120(n/d) where d|n.
%Y A056314 Column 3 of A284871.
%Y A056314 Cf. A045625.
%K A056314 nonn
%O A056314 1,1
%A A056314 _Marks R. Nester_

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