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A056399 Number of step shifted (decimated) sequence structures using exactly five different symbols. +0
1
0, 0, 0, 0, 1, 9, 26, 299, 1183, 10701, 24736, 349241, 626053, 6680979, 26364610, 137247254, 353304459, 4826418027, 8199440662, 93679529503, 315943737331, 1913783074461, 4382586624256, 60629067776483 (list; graph; listen)
OFFSET

1,6

COMMENT

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

REFERENCES

M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.

FORMULA

A056394(n)-A056393(n).

CROSSREFS

Cf. A056379.

Sequence in context: A055849 A084813 A056409 this_sequence A135864 A074954 A103952

Adjacent sequences: A056396 A056397 A056398 this_sequence A056400 A056401 A056402

KEYWORD

nonn

AUTHOR

Marks R. Nester (nesterm(AT)dpi.qld.gov.au)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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