%I A056516
%S A056516 1,1,1,3,4,10,14,36,50,137,201,548,854,2417,3839,11060
%N A056516 Number of primitive (period n) periodic palindromic structures using 
               a maximum of five different symbols.
%C A056516 For example, aaabbb is not a (finite) palindrome but it is a periodic 
               palindrome. Permuting the symbols will not change the structure.
%D A056516 M. R. Nester (1999). Mathematical investigations of some plant interaction 
               designs. PhD Thesis. University of Queensland, Brisbane, Australia.
%F A056516 Sum mu(d)*A056506(n/d) where d|n.
%F A056516 Moebius transform of A056506. - T. D. Noe (noe(AT)sspectra.com), Oct 
               25 2006
%Y A056516 Cf. A056479.
%Y A056516 Sequence in context: A121720 A007068 A056515 this_sequence A056517 A048155 
               A103080
%Y A056516 Adjacent sequences: A056513 A056514 A056515 this_sequence A056517 A056518 
               A056519
%K A056516 nonn
%O A056516 1,4
%A A056516 Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
%E A056516 Corrected by T. D. Noe (noe(AT)sspectra.com), Oct 25 2006