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Number of primitive (period n) step cyclic shifted sequences using a maximum of five different symbols.
2

%I #6 Aug 22 2017 20:53:11

%S 5,10,30,105,196,1460,2010,13950,37050,246542,445510,5204180,7832180,

%T 72701620,254689426,1196199375,2805046960,35322773200,55770979190,

%U 596439488166,1892294576710,10837222569140

%N Number of primitive (period n) step cyclic shifted sequences using a maximum of five different symbols.

%C See A056371 for an explanation of step shifts. Under step cyclic shifts, abcde, bdace, bcdea, cdeab and daceb etc. are 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)*A056413(n/d) where d|n.

%K nonn

%O 1,1

%A _Marks R. Nester_