%I A056447
%S A056447 0,0,0,0,1,3,6,52,148,1139,2306,30118,48476,478951,1762916,8601578,
%T A056447 20789656,268188491,431583572,4685757971,15045763306,86991020695,
%U A056447 190548007556,2526401778030,4873374476387,39199367113661
%N A056447 Number of primitive (period n) step cyclic shifted sequence structures 
               using exactly five different symbols.
%C A056447 See A056371 for an explanation of step shifts. Under step cyclic shifts, 
               abcde, bdace, bcdea, cdeab and daceb etc. are equivalent. Permuting 
               the symbols will not change the structure.
%D A056447 M. R. Nester (1999). Mathematical investigations of some plant interaction 
               designs. PhD Thesis. University of Queensland, Brisbane, Australia.
%F A056447 A056442(n)-A056441(n).
%Y A056447 Cf. A056427.
%Y A056447 Sequence in context: A032322 A111752 A102931 this_sequence A056437 A012275 
               A067608
%Y A056447 Adjacent sequences: A056444 A056445 A056446 this_sequence A056448 A056449 
               A056450
%K A056447 nonn
%O A056447 1,6
%A A056447 Marks R. Nester (nesterm(AT)dpi.qld.gov.au)