login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A056410 Number of primitive (aperiodic) step shifted (decimated) sequence structures using exactly six different symbols. 0
0, 0, 0, 0, 0, 1, 4, 83, 454, 5761, 17998, 334796, 777107, 10574991, 52611728, 342198939, 1094122103, 18448004164, 38504610244, 538330828006, 2215487105213, 16330536692133, 45407723468330 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

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..23.

FORMULA

A056405(n)-A056404(n).

CROSSREFS

Cf. A056390.

Sequence in context: A317889 A291371 A007154 * A056400 A248382 A292409

Adjacent sequences:  A056407 A056408 A056409 * A056411 A056412 A056413

KEYWORD

nonn

AUTHOR

Marks R. Nester

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 24 21:51 EDT 2022. Contains 356949 sequences. (Running on oeis4.)