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A056389 Number of primitive (aperiodic) step shifted (decimated) sequences using exactly five different symbols. 1
0, 0, 0, 0, 30, 900, 2800, 32010, 139080, 1276170, 2960940, 41625330, 75086430, 801519500, 3162262140, 16463761470, 42395689530, 579164323020, 983928850100, 11241276012750, 37913042832500 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

See A056371 for an explanation of step shifts.

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..21.

FORMULA

sum mu(d)*A056379(n/d) where d|n.

CROSSREFS

Sequence in context: A158580 A171335 A097313 * A056379 A320670 A171304

Adjacent sequences:  A056386 A056387 A056388 * A056390 A056391 A056392

KEYWORD

nonn

AUTHOR

Marks R. Nester

STATUS

approved

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Last modified May 11 08:00 EDT 2021. Contains 343784 sequences. (Running on oeis4.)