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Number of step shifted (decimated) sequence structures using exactly five different symbols.
1

%I #10 Aug 22 2017 20:53:10

%S 0,0,0,0,1,9,26,299,1183,10701,24736,349241,626053,6680979,26364610,

%T 137247254,353304459,4826418027,8199440662,93679529503,315943737331,

%U 1913783074461,4382586624256,60629067776483

%N Number of step shifted (decimated) sequence structures using exactly five different symbols.

%C See A056371 for an explanation of step shifts. Permuting the symbols will not change the structure.

%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 A056394(n)-A056393(n).

%Y Column 5 of A288620.

%Y Cf. A056379.

%K nonn

%O 1,6

%A _Marks R. Nester_