Search: id:A056517
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%I A056517
%S A056517 1,1,1,3,4,10,14,36,50,138,202,561,875,2571,4105
%N A056517 Number of primitive (period n) periodic palindromic structures using 
               a maximum of six different symbols.
%C A056517 For example, aaabbb is not a (finite) palindrome but it is a periodic 
               palindrome. Permuting the symbols will not change the structure.
%D A056517 M. R. Nester (1999). Mathematical investigations of some plant interaction 
               designs. PhD Thesis. University of Queensland, Brisbane, Australia.
%F A056517 Sum mu(d)*A056507(n/d) where d|n.
%Y A056517 Cf. A056480.
%Y A056517 Sequence in context: A007068 A056515 A056516 this_sequence A048155 A103080 
               A055720
%Y A056517 Adjacent sequences: A056514 A056515 A056516 this_sequence A056518 A056519 
               A056520
%K A056517 nonn
%O A056517 1,4
%A A056517 Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
%E A056517 Corrected by T. D. Noe (noe(AT)sspectra.com), Oct 25 2006

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