|
Search: id:A056438
|
|
|
| A056438 |
|
Step cyclic shifted sequence structures using exactly six different symbols. |
|
+0
1
|
|
| 0, 0, 0, 0, 0, 1, 1, 18, 59, 630, 1681, 28867, 60083, 757577, 3514504, 21424002, 64372109, 1024999230, 2026631203, 26920955243, 105501588415, 742299898741, 1974251382095, 31721456317841, 74052852505684
(list; graph; listen)
|
|
|
OFFSET
|
1,8
|
|
|
COMMENT
|
See A056371 for an explanation of step shifts. Under step cyclic shifts, abcde, bdace, bcdea, cdeab and daceb etc. are equivalent. 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
|
A056433(n)-A056432(n).
|
|
CROSSREFS
|
Cf. A056419.
Sequence in context: A048356 A027055 A056448 this_sequence A105521 A154563 A090073
Adjacent sequences: A056435 A056436 A056437 this_sequence A056439 A056440 A056441
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
|
|
|
Search completed in 0.002 seconds
|
