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A056399 Number of step shifted (decimated) sequence structures using exactly five different symbols. 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; refs; listen; history; text; internal format)
OFFSET

1,6

COMMENTS

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. [See A056391 for pdf file of Chap. 2]

LINKS

Table of n, a(n) for n=1..24.

FORMULA

A056394(n)-A056393(n).

CROSSREFS

Column 5 of A288620.

Cf. A056379.

Sequence in context: A322764 A325585 A056409 * A256927 A135864 A074954

Adjacent sequences:  A056396 A056397 A056398 * A056400 A056401 A056402

KEYWORD

nonn

AUTHOR

Marks R. Nester

STATUS

approved

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Last modified August 14 05:20 EDT 2022. Contains 356110 sequences. (Running on oeis4.)